3840% is the change from 20 to 788
Calculation steps:
[( 788 - 20 ) ÷ 20] x 100 = 3840%
Formula
Percentage change = [(788 - 20) / 20] x 100
Subtract the new number by the original number
788 - 20 = 768
768 ÷ 20 = 38.4
38.4 x 100 = 3840%
Example