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Percentage Calculator
Use this percentage calculator to find a percentage of a number, see what percent one value is of another, and work out percentage change between two values.
How to use
- Pick the calculation you need (one of the three boxes).
- Enter your numbers.
- The result appears as you type.
Frequently asked questions
How do you calculate a percentage?
Multiply the number by the percentage and divide by 100. For example, 15% of 200 is 200 × 15 / 100 = 30.
How do you calculate percentage increase?
(New value − Old value) / Old value × 100. Going from 50 to 65 is a 30% increase.
How do I find a discount percentage?
Use the third box with the original and new price; a negative result is the discount.
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example 30 out of 120 is 30 ÷ 120 × 100 = 25%.
How are percentage increase and decrease calculated?
Use (new − old) ÷ old × 100. A positive result is an increase, a negative one a decrease.