15.2% is the change from 638 to 735
Calculation steps:
[( 735 - 638 ) ÷ 638] x 100 = 15.2%
Formula
Percentage change = [(735 - 638) / 638] x 100
Subtract the new number by the original number
735 - 638 = 97
97 ÷ 638 = 0.15203761755485892
0.15203761755485892 x 100 = 15.2%