Percentage calculator
Five everyday percentage sums on one page: X% of a number, what percent one number is of another, percentage change, and adding or taking off a percentage.
Good to know
The lines are: what is X% of Y; X is what percent of Y; the percentage change from X to Y; Y plus X%; and Y minus X%.
Examples
| Sum | Answer |
|---|---|
| 15% of 80 | 12 |
| 30 is what % of 120 | 25% |
| From 80 to 100 | +25% |
| 200 plus 15% | 230 |
| 200 minus 15% | 170 |
| 17.5% of 49.99 | 8.7483 |
Worked out with Figure's own exact-decimal maths.
How to use it
Each line works out as you type, in exact decimals. The page opens with 15% of 80, which is 12. Sums are done in exact decimals (0.1 + 0.2 is 0.3) and shown in your own currency. Nothing is uploaded and there is no account.
Good for:
- Tips, service charges and VAT or sales tax
- Exam and test marks
- Pay rises and price changes
- Discounts and offers
- Interest and savings
Questions
How do I work out a percentage of a number?
Multiply the number by the percentage and divide by 100: 15% of 80 is 80 × 15 ÷ 100 = 12.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100: 30 out of 120 is 30 ÷ 120 × 100 = 25%.
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