A pie chart answers a composition question: how is one whole divided? In PTE Academic Describe Image, the language challenge is to identify the dominant share, group smaller slices, and compare proportions without pretending that a single chart shows change over time.
Pearson currently gives 25 seconds to study the image and 40 seconds to answer. Its official guidance emphasizes key features rather than every label. For a pie chart, your most useful vocabulary is often accounts for, makes up, constitutes, the majority, just under a quarter, and combined.
Read the whole before the slices
Imagine an original chart titled Allocation of a university sustainability fund:
| Area | Share |
|---|---|
| Building efficiency | 42% |
| Public transport | 27% |
| Research grants | 18% |
| Waste reduction | 8% |
| Outreach | 5% |
The whole is the fund, not all university spending. The slices are allocation shares, not measured results. You can say building efficiency receives the largest share. You cannot say it produced the greatest environmental benefit.
That title-to-claim boundary is essential. Before speaking, complete this frame in your head: “The chart divides what whole by which categories?”
Accounts for, makes up, and constitutes
All three can connect a category to its share:
Building efficiency accounts for 42 percent of the fund.
Public transport makes up just over a quarter of the allocation.
Research grants constitute 18 percent of total funding.
The category is the subject, and the share or part follows. Avoid reversing the relationship: 42 percent accounts for building efficiency is awkward unless the percentage itself is being treated as a share that represents the category.
Makes up is neutral and accessible. Accounts for is common in analytical descriptions. Constitutes is more formal but not inherently more accurate. Choose one naturally; do not cycle through all three merely to display range.
Majority, plurality, and largest share
A majority means more than half. The 42-percent category is the largest slice, but it is not a majority.
Building efficiency has the largest share, at 42 percent.
Calling it the majority would change the mathematics. Plurality can mean the largest share without exceeding half, but it is specialized and may distract in a short response. Largest share is clearer.
If one slice is 56 percent, then these are accurate:
It represents a majority of the total.
It accounts for just over half of the allocation.
Do not call several categories the majority. Their combined share may form a majority, but each individual slice may not.
Fractions as approximations
Fractions can make the overall pattern easier to hear:
- 49–51%: approximately half
- 24–26%: about a quarter
- 32–34%: roughly a third
- 74–76%: around three quarters
Keep the approximation signal. Twenty-seven percent is just over a quarter, not exactly one quarter. Forty-two percent is more than two fifths or simply 42 percent; forcing a fraction does not improve it.
Use exact figures for the key slice and approximations to group secondary information. Repeating five precise percentages can sound like a label inventory rather than a description.
Understanding is only the first step.
Lyra Practice helps you retrieve and use high-value workplace expressions in realistic situations until they feel natural.
Start a practice session →Combine categories deliberately
The three smallest categories total 31 percent:
Research grants, waste reduction, and outreach together account for 31 percent.
Grouping is useful when the categories have a visible relationship or when their total clarifies the balance. It can also compare one dominant slice with the rest:
Building efficiency alone receives a larger share than research, waste reduction, and outreach combined.
The calculation must be correct: 42 exceeds 31. Do not combine random slices just to create a talking point. Also preserve the categories; minor uses may sound dismissive when the chart merely reports smaller allocations.
Percentage points, shares, and ratios
Building efficiency exceeds public transport by 15 percentage points. Saying 15 percent more describes a relative difference and is not equivalent.
The largest share is 15 percentage points above the second-largest.
A ratio is another relationship, but use it only when simple and useful:
The allocation for waste reduction is roughly one fifth of the allocation for building efficiency.
Eight is close to one fifth of 42. Still, exact percentages are often faster and safer under time pressure.
One pie chart does not show a trend
With one composition at one point, do not say a category rose, fell, grew, or declined. Those verbs require a comparison over time or another stated baseline.
Safe verbs include:
- represents
- accounts for
- is allocated to
- has the largest share
- exceeds
If two pie charts show 2020 and 2025, change language becomes possible, but the denominator still matters. A share can rise even when the underlying amount falls if the whole changes more sharply. Describe only what the charts support.
Weak and stronger descriptions
Weak response:
The beautiful pie chart has five colors. Building efficiency is 42, transport is 27, research is 18, waste is 8, and outreach is 5. Building efficiency increased the most because it is important.
This version spends time on appearance, drops the percentage unit, invents a change, and supplies a cause absent from the image.
Stronger response:
The pie chart shows how a university sustainability fund is allocated across five areas. Building efficiency receives the largest share, at 42 percent, although it does not form a majority. Public transport accounts for just over a quarter, while research receives 18 percent. The two smallest categories, waste reduction and outreach, make up only 13 percent combined. Overall, funding is concentrated in building efficiency and transport.
The final sentence is a visible composition summary: the two categories total 69 percent. It does not judge whether the allocation is wise.
A preparation note that preserves composition
Use a note such as:
whole = sustainability fund | 42 largest, not majority | 27 > quarter | smallest 8+5=13 | top2=69
That note prevents three common errors: losing the whole, calling the leader a majority, and adding the smallest values incorrectly. It also gives you a response order without providing memorized wording.
Common mistakes
- Confusing the largest share with a majority. More than every other slice is not the same as more than 50 percent.
- Dropping the denominator. A share of the fund is not a share of all spending.
- Saying percent when you mean percentage points. The gap from 27 to 42 is 15 points.
- Inventing movement. One static pie chart contains no rise or decline.
- Reading colors. Mention color only if it encodes information the labels do not make clear.
- Giving an opinion. Describe the allocation; do not recommend a better one.
- Using a canned conclusion. Your overview must come from the displayed composition.
Worked grouping drill: calculate before you combine
Use this original composition of a student society's annual expenses:
| Category | Share |
|---|---|
| Venue hire | 36% |
| Events | 29% |
| Equipment | 17% |
| Publicity | 11% |
| Administration | 7% |
The two largest categories together account for 65 percent. It is therefore accurate to say that spending is concentrated in venue hire and events. The three smaller categories form the remaining 35 percent. It is not accurate to call venue hire a majority, because 36 percent is below half.
A selective description could be:
The pie chart divides a student society's annual expenses into five categories. Venue hire receives the largest share, at 36 percent, followed by events at 29 percent. Together, these two areas account for almost two thirds of spending. Equipment represents 17 percent, while publicity and administration make up the remaining 18 percent combined.
Why say almost two thirds? Two thirds is approximately 66.7 percent, and the displayed combined share is 65 percent. Why use remaining only in the final clause? The 18 percent is what remains after the first three named shares: 36 + 29 + 17 = 82. The description preserves the whole and does not imply that the smallest categories are unimportant.
Percentage points versus relative percentage
Venue hire is seven percentage points above events: 36 minus 29 equals 7. Relative to the events share, venue hire is about 24 percent larger because 7 divided by 29 is about 0.24. These are different comparisons. In a rapid spoken description, the seven-point gap is both simpler and directly visible.
Check four statements:
- “Venue hire represents a majority of expenses.”
- “Venue hire and events together constitute 65 percent.”
- “Publicity is four percentage points above administration.”
- “Equipment fell to 17 percent.”
Answers: 1 is false because a majority exceeds 50 percent. 2 is true by addition. 3 is true because 11 minus 7 equals 4. 4 is unsupported because a single composition provides no earlier value from which equipment could fall. This exercise is deterministic: every answer follows from arithmetic or from the chart's lack of a time comparison.
Quick check
A fictional chart shows housing 38%, food 26%, transport 21%, and other 15%.
- Does housing form a majority? No. It has the largest share but remains below half.
- What do food and transport make up combined? 47 percent.
- What is the gap between housing and food? 12 percentage points.
- Can you say housing expenditure rose? No, not without another time point or baseline.
Give a 30–40-second description. Use one exact figure, one approximate fraction, and one combined share. Then listen back: did every noun still refer to the chart's stated whole?
Continue with PTE Describe Image vocabulary for maps, processes, and photos, or practice from the PTE Academic Vocabulary hub and Exam English hub. A related comparison lesson is IELTS Task 1 bar and pie chart vocabulary, but its written-task requirements differ.
Sources
- PTE Academic Speaking & Writing test format — Pearson
- The do's and don'ts of Describe Image — Pearson
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