29.41% is the change from 493 to 638
Calculation steps:
[( 638 - 493 ) ÷ 493] x 100 = 29.41%
Formula
Percentage change = [(638 - 493) / 493] x 100
Subtract the new number by the original number
638 - 493 = 145
145 ÷ 493 = 0.29411764705882354
0.29411764705882354 x 100 = 29.41%