Percentage Calculator
Work out X% of Y, what percent one number is of another, percentage increase or decrease, and add or subtract a percentage, with the working shown.
Runs on your device
Result
Results appear here as you type.
What it does
Five common percentage questions in one place. Each answer shows the formula with your numbers substituted, so you can follow and reuse the method.
How to use it
- Choose the question type.
- Enter the two values.
- Read the answer and working.
Example
45 is 75% of 60. Select Try an example above to see it.
When it helps
- Marks and grade percentages.
- Discounts and price rises.
- Growth rates in reports.
Questions
Is a 50% rise followed by a 50% fall back to the start?
No. 100 → 150 → 75. Percentages apply to different bases.
How is percentage change calculated?
(new − old) ÷ |old| × 100.
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