-11.88% is the change from 724 to 638
Calculation steps:
[( 638 - 724 ) ÷ 724] x 100 = -11.88%
Formula
Percentage change = [(638 - 724) / 724] x 100
Subtract the new number by the original number
638 - 724 = -86
-86 ÷ 724 = -0.11878453038674033
-0.11878453038674033 x 100 = -11.88%