15.49% is the change from 639 to 738
Calculation steps:
[( 738 - 639 ) ÷ 639] x 100 = 15.49%
Formula
Percentage change = [(738 - 639) / 639] x 100
Subtract the new number by the original number
738 - 639 = 99
99 ÷ 639 = 0.15492957746478872
0.15492957746478872 x 100 = 15.49%