-21.1% is the change from 872 to 688
Calculation steps:
[( 688 - 872 ) ÷ 872] x 100 = -21.1%
Formula
Percentage change = [(688 - 872) / 872] x 100
Subtract the new number by the original number
688 - 872 = -184
-184 ÷ 872 = -0.21100917431192662
-0.21100917431192662 x 100 = -21.1%