32.14% is the change from 420 to 555
Calculation steps:
[( 555 - 420 ) ÷ 420] x 100 = 32.14%
Formula
Percentage change = [(555 - 420) / 420] x 100
Subtract the new number by the original number
555 - 420 = 135
135 ÷ 420 = 0.32142857142857145
0.32142857142857145 x 100 = 32.14%