Percentage calculator
Free online percentage calculator. Calculate the percentage of a number, percentage change, add or subtract percentage easily and quickly.
What is X% of Y?
X is what percentage of Y?
Percentage change
Add or subtract percentage
How it works
- 1
Choose the calculation type
Select one of the 4 available calculators: X% of Y, X is what % of Y, percentage change or add/subtract percentage.
- 2
Enter the values
Fill in the fields required by the selected card with your starting numbers.
- 3
View the result
The result is calculated instantly and shown on screen, ready to consult or copy.
FAQ
How do you calculate the percentage of a number?
Multiply the number by the percentage and divide by 100. For example: 25% of 200 = 200 × 25 / 100 = 50.
How do you calculate percentage change?
Subtract the initial value from the final, divide by the initial value and multiply by 100. Positive means increase, negative means decrease.
What's the difference between 'add' and 'subtract' percentage?
'Add' calculates the value after increase (e.g. price + tax), 'Subtract' calculates after reduction (e.g. discounted price).
