-85.06% is the change from 870 to 130
Calculation steps:
[( 130 - 870 ) ÷ 870] x 100 = -85.06%
Formula
Percentage change = [(130 - 870) / 870] x 100
Subtract the new number by the original number
130 - 870 = -740
-740 ÷ 870 = -0.8505747126436781
-0.8505747126436781 x 100 = -85.06%