# How do you find the percent change if original: 231.2 mph and new: 236.4 mph?

Mar 20, 2018

color(purple)( " Percentage change in speed " = 2.25%

#### Explanation:

Original speed $O = 231.2 \text{ mph}$

New speed $N = 236.4 \text{ mph}$

Percentage change in speed is given by the formula,

$\text{Change } C = \left(\frac{N - O}{O}\right) \cdot 100$

$C = \left(\frac{236.4 - 231 2}{231.2}\right) \cdot 100$

# => (5.2 * 100) / 231.2 = 2.25%