38.7% is the change from 460 to 638
Calculation steps:
[( 638 - 460 ) ÷ 460] x 100 = 38.7%
Formula
Percentage change = [(638 - 460) / 460] x 100
Subtract the new number by the original number
638 - 460 = 178
178 ÷ 460 = 0.3869565217391304
0.3869565217391304 x 100 = 38.7%