-12.48% is the change from 729 to 638
Calculation steps:
[( 638 - 729 ) ÷ 729] x 100 = -12.48%
Formula
Percentage change = [(638 - 729) / 729] x 100
Subtract the new number by the original number
638 - 729 = -91
-91 ÷ 729 = -0.12482853223593965
-0.12482853223593965 x 100 = -12.48%