-15.78% is the change from 868 to 731
Calculation steps:
[( 731 - 868 ) ÷ 868] x 100 = -15.78%
Formula
Percentage change = [(731 - 868) / 868] x 100
Subtract the new number by the original number
731 - 868 = -137
-137 ÷ 868 = -0.1578341013824885
-0.1578341013824885 x 100 = -15.78%