3935% is the change from 20 to 807
Calculation steps:
[( 807 - 20 ) ÷ 20] x 100 = 3935%
Formula
Percentage change = [(807 - 20) / 20] x 100
Subtract the new number by the original number
807 - 20 = 787
787 ÷ 20 = 39.35
39.35 x 100 = 3935%
Example