28.1% is the change from 420 to 538
Calculation steps:
[( 538 - 420 ) ÷ 420] x 100 = 28.1%
Formula
Percentage change = [(538 - 420) / 420] x 100
Subtract the new number by the original number
538 - 420 = 118
118 ÷ 420 = 0.28095238095238095
0.28095238095238095 x 100 = 28.1%