42.01% is the change from 638 to 906
Calculation steps:
[( 906 - 638 ) ÷ 638] x 100 = 42.01%
Formula
Percentage change = [(906 - 638) / 638] x 100
Subtract the new number by the original number
906 - 638 = 268
268 ÷ 638 = 0.4200626959247649
0.4200626959247649 x 100 = 42.01%