720% is the change from 20 to 164
Calculation steps:
[( 164 - 20 ) ÷ 20] x 100 = 720%
Formula
Percentage change = [(164 - 20) / 20] x 100
Subtract the new number by the original number
164 - 20 = 144
144 ÷ 20 = 7.2
7.2 x 100 = 720%
Example