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Percentage Calculator
Calculate percentages, ratios, and percentage increases or decreases.
- Result
- 30
Results update as you type and are rounded to 12 significant digits. Calculations run in your browser.
How it works
To find X% of a value, multiply the value by X / 100. To find what percent a part is of a whole, divide the part by the whole and multiply by 100. Percentage change is (new − original) / |original| × 100, so a positive result means an increase. A zero original value has no defined percentage change. For example, going from 150 to 180 is a 20% increase.