3.94% is the change from 635 to 660
Calculation steps:
[( 660 - 635 ) ÷ 635] x 100 = 3.94%
Formula
Percentage change = [(660 - 635) / 635] x 100
Subtract the new number by the original number
660 - 635 = 25
25 ÷ 635 = 0.03937007874015748
0.03937007874015748 x 100 = 3.94%