How to Calculate Percentages
This tool handles the three most common percentage questions: what is X% of a number, what is a number plus X%, and what is a number minus X%. Just enter any value and a percentage to get instant answers.
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Frequently Asked Questions
How do I calculate a percentage?
To find X% of Y: multiply Y by X and divide by 100. Example: 15% of 500 = 500 × 15 / 100 = 75.
How do I calculate percentage change?
Percentage change = (New - Old) / Old × 100. If something went from 200 to 250, the change is (50/200) × 100 = 25%.