18.03% is the change from 538 to 635
Calculation steps:
[( 635 - 538 ) ÷ 538] x 100 = 18.03%
Formula
Percentage change = [(635 - 538) / 538] x 100
Subtract the new number by the original number
635 - 538 = 97
97 ÷ 538 = 0.18029739776951673
0.18029739776951673 x 100 = 18.03%