4255% is the change from 20 to 871
Calculation steps:
[( 871 - 20 ) ÷ 20] x 100 = 4255%
Formula
Percentage change = [(871 - 20) / 20] x 100
Subtract the new number by the original number
871 - 20 = 851
851 ÷ 20 = 42.55
42.55 x 100 = 4255%
Example