25.08% is the change from 638 to 798
Calculation steps:
[( 798 - 638 ) ÷ 638] x 100 = 25.08%
Formula
Percentage change = [(798 - 638) / 638] x 100
Subtract the new number by the original number
798 - 638 = 160
160 ÷ 638 = 0.2507836990595611
0.2507836990595611 x 100 = 25.08%