122.38% is the change from 420 to 934
Calculation steps:
[( 934 - 420 ) ÷ 420] x 100 = 122.38%
Formula
Percentage change = [(934 - 420) / 420] x 100
Subtract the new number by the original number
934 - 420 = 514
514 ÷ 420 = 1.223809523809524
1.223809523809524 x 100 = 122.38%