4290% is the change from 20 to 878
Calculation steps:
[( 878 - 20 ) ÷ 20] x 100 = 4290%
Formula
Percentage change = [(878 - 20) / 20] x 100
Subtract the new number by the original number
878 - 20 = 858
858 ÷ 20 = 42.9
42.9 x 100 = 4290%
Example