103.1% is the change from 420 to 853
Calculation steps:
[( 853 - 420 ) ÷ 420] x 100 = 103.1%
Formula
Percentage change = [(853 - 420) / 420] x 100
Subtract the new number by the original number
853 - 420 = 433
433 ÷ 420 = 1.0309523809523808
1.0309523809523808 x 100 = 103.1%