-88.39% is the change from 870 to 101
Calculation steps:
[( 101 - 870 ) ÷ 870] x 100 = -88.39%
Formula
Percentage change = [(101 - 870) / 870] x 100
Subtract the new number by the original number
101 - 870 = -769
-769 ÷ 870 = -0.8839080459770114
-0.8839080459770114 x 100 = -88.39%