51.72% is the change from 638 to 968
Calculation steps:
[( 968 - 638 ) ÷ 638] x 100 = 51.72%
Formula
Percentage change = [(968 - 638) / 638] x 100
Subtract the new number by the original number
968 - 638 = 330
330 ÷ 638 = 0.5172413793103449
0.5172413793103449 x 100 = 51.72%