3910% is the change from 20 to 802
Calculation steps:
[( 802 - 20 ) ÷ 20] x 100 = 3910%
Formula
Percentage change = [(802 - 20) / 20] x 100
Subtract the new number by the original number
802 - 20 = 782
782 ÷ 20 = 39.1
39.1 x 100 = 3910%
Example