Percentage calculator
Work out percentages three ways: X% of a number, what percentage one number is of another (useful for marks), and the percentage increase or decrease between two values.
How to use it
- Pick the kind of question.
- Enter the two numbers.
- The answer updates as you type.
Questions
How do I find my percentage of marks?
Choose 'X is what % of Y', enter your marks as X and the maximum marks as Y. For example, 432 out of 500 is 86.4%.
How is percentage change calculated?
(new − old) ÷ old × 100. A rise from 200 to 250 is a 25% increase.
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