-80.69% is the change from 870 to 168
Calculation steps:
[( 168 - 870 ) ÷ 870] x 100 = -80.69%
Formula
Percentage change = [(168 - 870) / 870] x 100
Subtract the new number by the original number
168 - 870 = -702
-702 ÷ 870 = -0.8068965517241379
-0.8068965517241379 x 100 = -80.69%