531.68% is the change from 101 to 638
Calculation steps:
[( 638 - 101 ) ÷ 101] x 100 = 531.68%
Formula
Percentage change = [(638 - 101) / 101] x 100
Subtract the new number by the original number
638 - 101 = 537
537 ÷ 101 = 5.316831683168317
5.316831683168317 x 100 = 531.68%