Math tool
Percentage Calculator
Calculate what percentage one value is of another with a fast, mobile-friendly calculator.
Instant calculator
Percentage Calculator
Calculate what percentage Value A is of Value B using (A / B) * 100.
Result
12.50%
25 is 12.50% of 200.
How the percentage calculator works
The calculator uses the formula (A / B) * 100. Enter the part as Value A and the whole or comparison value as Value B. The result shows the percentage immediately, which is useful for discounts, test scores, growth rates, ratios, and quick everyday math.
For example, if Value A is 25 and Value B is 200, the calculation is 25 divided by 200, then multiplied by 100. The result is 12.5%, meaning 25 is 12.5% of 200.
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