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# What is the percentage increase from 4 to 5?

Mar 9, 2018

#### Answer:

See a solution process below:

#### Explanation:

The formula for calculating the percent change in a value between two points in time is:

$p = \frac{N - O}{O} \cdot 100$

Where:

$p$ is the percent change - what we are solving for in this problem.

$N$ is the New Value - 5 in this problem.

$O$ is the Old Value - 4 in this problem.

Substituting and solving for $p$ gives:

$p = \frac{5 - 4}{4} \cdot 100$

$p = \frac{1}{4} \cdot 100$

$p = \frac{100}{4}$

$p = 25$

There was a 25% increase from 4 to 5.