42.95% is the change from 638 to 912
Calculation steps:
[( 912 - 638 ) ÷ 638] x 100 = 42.95%
Formula
Percentage change = [(912 - 638) / 638] x 100
Subtract the new number by the original number
912 - 638 = 274
274 ÷ 638 = 0.42946708463949845
0.42946708463949845 x 100 = 42.95%