39.5% is the change from 638 to 890
Calculation steps:
[( 890 - 638 ) ÷ 638] x 100 = 39.5%
Formula
Percentage change = [(890 - 638) / 638] x 100
Subtract the new number by the original number
890 - 638 = 252
252 ÷ 638 = 0.3949843260188088
0.3949843260188088 x 100 = 39.5%