1.72% is the change from 638 to 649
Calculation steps:
[( 649 - 638 ) ÷ 638] x 100 = 1.72%
Formula
Percentage change = [(649 - 638) / 638] x 100
Subtract the new number by the original number
649 - 638 = 11
11 ÷ 638 = 0.017241379310344827
0.017241379310344827 x 100 = 1.72%