What Percentage Is One Number of Another?
Find what percentage a number is of a total. Enter the part and the whole below to get the answer in the form "X is Y% of Z", with the full calculation shown.
To find what percentage a part is of a whole, divide the part by the whole and multiply by 100:
What percentage is 25 of 200?
The formula
Worked example
Frequently asked questions
How do I work out what percentage one number is of another?
Divide the part by the whole, then multiply by 100. The formula is (Part ÷ Whole) × 100. For example, to find what percentage 25 is of 200: (25 ÷ 200) × 100 = 12.5%.
What is the formula for "X is what percent of Y"?
Percentage = (X ÷ Y) × 100, where X is the part and Y is the whole. The whole cannot be zero, because you divide by it.
Can the result be more than 100%?
Yes. If the part is larger than the whole, the result is greater than 100%. For example, 150 is 150% of 100.
How is this different from finding a percentage of a number?
This calculator finds what share one number is of another (Part ÷ Whole × 100). The "percentage of a number" calculator goes the other way — it finds an actual amount from a given percentage, e.g. 20% of 500 = 100.
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