Percentage Calculator
Calculate percentages instantly — find percent of a number, percentage change, percentage increase or decrease, and more.
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Frequently Asked Questions
How do I calculate a percentage of a number?
To find X% of Y, multiply Y by X and divide by 100. For example, 25% of 200 = (200 × 25) ÷ 100 = 50. Use the first calculator above to do this instantly.
How do I calculate percentage increase?
Percentage increase = ((New Value - Old Value) ÷ Old Value) × 100. For example, from 80 to 100 = ((100-80) ÷ 80) × 100 = 25% increase. Use the third calculator above.
How do I find what percentage one number is of another?
Divide the first number by the second and multiply by 100. For example, 50 is what % of 200? = (50 ÷ 200) × 100 = 25%. Use the second calculator above.
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