To find a relative percentage increase via a growth factor, you need to find the growth rate, by using the formula 

How Do You Find a Percentage Increase Using a Growth Factor?

To find the relative percentage change via growth factor, you need to find the growth or decay rate, by using the formula y =a (1 ± r). This video explains. 

A growth factor helps you calculate a final amount after a percentage has been added or subtracted. It is given by the formula:

 is the decimal representation of the percentage that is being added or subtracted.

Indicates the percentage increase or decrease between the initial and final amounts. Also known as growth rate.

The starting amount, before a percentage increase or decrease

The amount after you have included the percentage increase or decrease. It is given by the formula:

A measure of how much a quantity has changed expressed as percentage (%)