X is what percent of Y?

Find the percentage one number represents of another

is?%of

How it works

Use this when you have the part and the total and want the proportion between them. It is the calculation behind test scores, completion rates, market share and progress against a target.

Percentage = (part ÷ total) × 100

Example: 25 out of 200 is (25 ÷ 200) × 100 = 12.5%. If you got 45 of 60 questions right, that is (45 ÷ 60) × 100 = 75%.

Step-by-Step:

  1. Divide the part by the whole: 25 ÷ 200 = 0.125
  2. Multiply by 100 to convert to percentage: 0.125 × 100 = 12.5%

To find what percentage 25 is of 200, we see how many times 25 fits into 200, then multiply by 100 to express it as a percentage.

Frequently asked questions

How do you find what percent one number is of another?

Divide the part by the total and multiply by 100. To find what 30 is of 120: 30 ÷ 120 = 0.25, then 0.25 × 100 = 25%.

Why is my result above 100%?

Because the part is larger than the total you entered. That is expected when comparing an actual figure against a smaller target, for example 120 sales against a target of 100 gives 120%.

Can I use this for exam scores?

Yes. Enter the correct answers as the part and the number of questions as the total, and the result is your score as a percentage.