3895% is the change from 20 to 799
Calculation steps:
[( 799 - 20 ) ÷ 20] x 100 = 3895%
Formula
Percentage change = [(799 - 20) / 20] x 100
Subtract the new number by the original number
799 - 20 = 779
779 ÷ 20 = 38.95
38.95 x 100 = 3895%
Example