38.73% is the change from 457 to 634
Calculation steps:
[( 634 - 457 ) ÷ 457] x 100 = 38.73%
Formula
Percentage change = [(634 - 457) / 457] x 100
Subtract the new number by the original number
634 - 457 = 177
177 ÷ 457 = 0.387308533916849
0.387308533916849 x 100 = 38.73%