17.81% is the change from 421 to 496
Calculation steps:
[( 496 - 421 ) ÷ 421] x 100 = 17.81%
Formula
Percentage change = [(496 - 421) / 421] x 100
Subtract the new number by the original number
496 - 421 = 75
75 ÷ 421 = 0.17814726840855108
0.17814726840855108 x 100 = 17.81%