18.57% is the change from 420 to 498
Calculation steps:
[( 498 - 420 ) ÷ 420] x 100 = 18.57%
Formula
Percentage change = [(498 - 420) / 420] x 100
Subtract the new number by the original number
498 - 420 = 78
78 ÷ 420 = 0.18571428571428572
0.18571428571428572 x 100 = 18.57%