Question

What is the percent change if you paid $1.87 per gallon on February 6th and $1.80 per gallon on February 17th?

Answer 1

The percent change formula is:

$\frac{\text{new price - previous price}}{\text{previous price}}\cdot100$

In this case, the percent change is:

$\frac{1.8-1.87}{1.87}\cdot100=-3.74\text{ \%}$