-83.79% is the change from 870 to 141
Calculation steps:
[( 141 - 870 ) ÷ 870] x 100 = -83.79%
Formula
Percentage change = [(141 - 870) / 870] x 100
Subtract the new number by the original number
141 - 870 = -729
-729 ÷ 870 = -0.8379310344827586
-0.8379310344827586 x 100 = -83.79%