Percentage Calculator
Calculate percentage increase, decrease and more
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How to Use Percentage Calculator
- 1Select a calculation mode: "What is X% of Y?", "X is what % of Y?" or "% Change".
- 2Enter the two values in the input fields.
- 3The result is calculated and displayed instantly as you type.
About Percentage Calculator
Calculate percentages with three different modes: find what X% of Y is, find what percentage X is of Y, and calculate the percentage change between two numbers. Results update instantly with full decimal precision. Covers percentage increase, percentage decrease and percentage difference calculations.
Frequently Asked Questions
How do I calculate percentage increase?
Use the "% Change from X to Y" mode. Enter the original value as "From" and the new value as "To". The tool calculates ((new - old) / old) x 100.
What is the formula for finding X% of Y?
The formula is (X / 100) x Y. For example, 15% of 200 = (15/100) x 200 = 30.
Can I calculate percentage decrease?
Yes. Use the "% Change" mode. If the new value is smaller than the original, the result will show as a percentage decrease.