-88.97% is the change from 870 to 96
Calculation steps:
[( 96 - 870 ) ÷ 870] x 100 = -88.97%
Formula
Percentage change = [(96 - 870) / 870] x 100
Subtract the new number by the original number
96 - 870 = -774
-774 ÷ 870 = -0.8896551724137931
-0.8896551724137931 x 100 = -88.97%