39.61% is the change from 457 to 638
Calculation steps:
[( 638 - 457 ) ÷ 457] x 100 = 39.61%
Formula
Percentage change = [(638 - 457) / 457] x 100
Subtract the new number by the original number
638 - 457 = 181
181 ÷ 457 = 0.39606126914660833
0.39606126914660833 x 100 = 39.61%