-96.7% is the change from 879 to 29
Calculation steps:
[( 29 - 879 ) ÷ 879] x 100 = -96.7%
Formula
Percentage change = [(29 - 879) / 879] x 100
Subtract the new number by the original number
29 - 879 = -850
-850 ÷ 879 = -0.9670079635949943
-0.9670079635949943 x 100 = -96.7%