3720% is the change from 20 to 764
Calculation steps:
[( 764 - 20 ) ÷ 20] x 100 = 3720%
Formula
Percentage change = [(764 - 20) / 20] x 100
Subtract the new number by the original number
764 - 20 = 744
744 ÷ 20 = 37.2
37.2 x 100 = 3720%
Example