100 is what percent of 250?

40%

100 is 40% of 250.

How it is worked out

Divide the part by the whole, then multiply by 100.

100 ÷ 250 = 0.4, and 0.4 × 100 = 40%

Try your own numbers

Answer40%

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Questions

100 is what percent of 250?
100 is 40% of 250. 100 ÷ 250 = 0.4, and 0.4 × 100 = 40%.
How do you work this out?
Divide the part by the whole, then multiply by 100.
Can I use other numbers?
Yes — the calculator on this page takes any two numbers, and the full percentage calculator covers every form: percentage of a number, one number as a percentage of another, percentage change, increase and decrease.