-9.58% is the change from 908 to 821
Calculation steps:
[( 821 - 908 ) ÷ 908] x 100 = -9.58%
Formula
Percentage change = [(821 - 908) / 908] x 100
Subtract the new number by the original number
821 - 908 = -87
-87 ÷ 908 = -0.09581497797356828
-0.09581497797356828 x 100 = -9.58%