Calculate a percentage
Choose what you need (X% of a number, what percentage one number is of another, a change, adding or subtracting a percentage), enter the two values and read the result along with the formula used.
Good to know
- Accepts a comma or a dot as the decimal separator.
- It shows the formula applied so you can check it.
- “Percentage difference” is symmetric (relative to the mean) and is not the same as percentage change.
- For prices with VAT or discounts there are dedicated calculators.
Full guide to the tool: Percentage calculator.
Frequently asked questions
What is the difference between change and percentage difference?
Change compares with a starting value. Percentage difference is symmetric: it is calculated relative to the mean of both numbers, so it gives a different result.
Can I use decimals with a comma?
Yes, the tool accepts both a comma and a dot as the decimal separator.
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