104.29% is the change from 420 to 858
Calculation steps:
[( 858 - 420 ) ÷ 420] x 100 = 104.29%
Formula
Percentage change = [(858 - 420) / 420] x 100
Subtract the new number by the original number
858 - 420 = 438
438 ÷ 420 = 1.042857142857143
1.042857142857143 x 100 = 104.29%