38.1% is the change from 462 to 638
Calculation steps:
[( 638 - 462 ) ÷ 462] x 100 = 38.1%
Formula
Percentage change = [(638 - 462) / 462] x 100
Subtract the new number by the original number
638 - 462 = 176
176 ÷ 462 = 0.38095238095238093
0.38095238095238093 x 100 = 38.1%