# How do you find the percent increase from 75 pencils to 225 pencils?

Oct 31, 2016

There was a 200% increase pencils.

#### Explanation:

The formula for percent change is:

p = (N - O)/O * 100% where $p$ is the percent change, $N$ is the new value and $O$ is the old value.

For this problem $O$ is known to be 75 pencils and $N$ is known to be 225 pencils, so substituting:

p = (225 - 75)/75 * 100%

p = 150/75 * 100%

p = 2 * 100%

p = 200%