-3.87% is the change from 879 to 845
Calculation steps:
[( 845 - 879 ) ÷ 879] x 100 = -3.87%
Formula
Percentage change = [(845 - 879) / 879] x 100
Subtract the new number by the original number
845 - 879 = -34
-34 ÷ 879 = -0.038680318543799774
-0.038680318543799774 x 100 = -3.87%