Percentage Calculator
Work out percentages, ratios and percentage change.
15% of 200 = 30
50 is 25% of 200
Increase of 25%
Results are estimates for information only, not financial advice. See how we build and verify our calculators.
A three-in-one percentage calculator: find X% of a value, work out what percent one number is of another, and calculate the percentage increase or decrease between two numbers.
How to use the Percentage Calculator
- Pick the calculation you need.
- Enter the two numbers.
- Read the answer instantly.
Frequently asked questions
How do I find what percent one number is of another?
Divide the part by the whole and multiply by 100. For example, 50 of 200 is (50 ÷ 200) × 100 = 25%.
How is percentage change calculated?
Percentage change = ((new − old) / old) × 100. A positive result is an increase; a negative result is a decrease.