49.69% is the change from 638 to 955
Calculation steps:
[( 955 - 638 ) ÷ 638] x 100 = 49.69%
Formula
Percentage change = [(955 - 638) / 638] x 100
Subtract the new number by the original number
955 - 638 = 317
317 ÷ 638 = 0.49686520376175547
0.49686520376175547 x 100 = 49.69%