-85.9% is the change from 986 to 139
Calculation steps:
[( 139 - 986 ) ÷ 986] x 100 = -85.9%
Formula
Percentage change = [(139 - 986) / 986] x 100
Subtract the new number by the original number
139 - 986 = -847
-847 ÷ 986 = -0.859026369168357
-0.859026369168357 x 100 = -85.9%