4215% is the change from 20 to 863
Calculation steps:
[( 863 - 20 ) ÷ 20] x 100 = 4215%
Formula
Percentage change = [(863 - 20) / 20] x 100
Subtract the new number by the original number
863 - 20 = 843
843 ÷ 20 = 42.15
42.15 x 100 = 4215%
Example