Percentile vs percentage: what is the difference?
By the FreeAllTool team · Updated October 28, 2026
After competitive exams, students often hear scores like “98.5 percentile” and wonder how it relates to their marks. Percentage and percentile sound similar but measure very different things.
Percentage: your marks out of 100
A percentage compares your marks with the maximum possible marks. If you score 180 out of 300, your percentage is 180 ÷ 300 × 100 = 60%. It depends only on your own performance and the paper’s total.
Percentile: your position compared with others
A percentile shows how you performed relative to other candidates. A percentile of 90 means you scored the same as or higher than 90% of the people who took the test. It does not tell you what your marks were.
A simple version of the formula used by many exams is:
Percentile = (Number of candidates with score ≤ yours ÷ Total candidates) × 100
An example
Suppose 1,000 candidates take a test, and 850 of them score the same as or lower than you. Your percentile is 850 Ă· 1,000 Ă— 100 = 85. Your marks could be 60% on a hard paper or 90% on an easy one; the percentile would be the same if your position were the same.
Why exams use percentiles
Large exams are often held in several shifts with different question papers. Some shifts may get harder papers than others. Calculating percentiles within each shift makes results fairer across sessions. The exact method varies by exam, and the National Testing Agency, for example, publishes its own normalisation procedure.
Reading your result
- A high percentile with modest marks means the paper was difficult for most candidates.
- Percentiles near the top are very closely packed. The difference between 99.0 and 99.5 can mean thousands of ranks in an exam with lakhs of candidates.
- Cut-offs for admission are often stated as percentiles or ranks, so compare like with like.
To work out a simple percentage from your marks, use our percentage calculator.