-24.91% is the change from 879 to 660
Calculation steps:
[( 660 - 879 ) ÷ 879] x 100 = -24.91%
Formula
Percentage change = [(660 - 879) / 879] x 100
Subtract the new number by the original number
660 - 879 = -219
-219 ÷ 879 = -0.24914675767918087
-0.24914675767918087 x 100 = -24.91%