18.97% is the change from 638 to 759
Calculation steps:
[( 759 - 638 ) ÷ 638] x 100 = 18.97%
Formula
Percentage change = [(759 - 638) / 638] x 100
Subtract the new number by the original number
759 - 638 = 121
121 ÷ 638 = 0.1896551724137931
0.1896551724137931 x 100 = 18.97%