28.11% is the change from 498 to 638
Calculation steps:
[( 638 - 498 ) ÷ 498] x 100 = 28.11%
Formula
Percentage change = [(638 - 498) / 498] x 100
Subtract the new number by the original number
638 - 498 = 140
140 ÷ 498 = 0.28112449799196787
0.28112449799196787 x 100 = 28.11%