## How to find percentage of two numbers?

Before we begin, read our introduction to percentage if you haven't done yet.
**Percentage of two numbers (X is what percent of Y?)**

Example 1: 18 is what percent of 90?

- First, we write down the the numbers as a ratio: 18/90
- which can be rewritten as 18/90 × 100/100
- or, (18/90×100) / 100
- 20/100 = 20%

As can be seen, we can find the percentage of **x** and **y** by simply dividing **x** by **y** and multiplying the result with **100**.

- Example 2: 400 is what percent of 500?
- 400/500×100 = 80%

As a corollary of above result, any fractional number or a decimal can be converted to its percentage equivalent by multiplying it with 100.

- 5/10 = 5/10 × 100 = 50%
- 0.25 = 0.25 × 100 = 25%

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