4700% is the change from 20 to 960
Calculation steps:
[( 960 - 20 ) ÷ 20] x 100 = 4700%
Formula
Percentage change = [(960 - 20) / 20] x 100
Subtract the new number by the original number
960 - 20 = 940
940 ÷ 20 = 47
47 x 100 = 4700%
Example