3925% is the change from 20 to 805
Calculation steps:
[( 805 - 20 ) ÷ 20] x 100 = 3925%
Formula
Percentage change = [(805 - 20) / 20] x 100
Subtract the new number by the original number
805 - 20 = 785
785 ÷ 20 = 39.25
39.25 x 100 = 3925%
Example