3600% is the change from 20 to 740
Calculation steps:
[( 740 - 20 ) ÷ 20] x 100 = 3600%
Formula
Percentage change = [(740 - 20) / 20] x 100
Subtract the new number by the original number
740 - 20 = 720
720 ÷ 20 = 36
36 x 100 = 3600%
Example