Percentage Calculator
X% of Y, % change, add or subtract %
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About the Percentage Calculator
Four everyday percentage calculations in one place: find a percentage of a number, find what percent one number is of another, work out the percentage change between two numbers, and add or subtract a percentage – useful for discounts, marks, GST, growth and more.
How to use it
- Pick the calculation you need.
- Type your numbers in the boxes.
- Read the answer, which updates as you type.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 200 = 200 × 15 ÷ 100 = 30.
How do I calculate percentage change?
(New − Old) ÷ Old × 100. From 500 to 650 is a 30% increase.
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