-86.9% is the change from 985 to 129
Calculation steps:
[( 129 - 985 ) ÷ 985] x 100 = -86.9%
Formula
Percentage change = [(129 - 985) / 985] x 100
Subtract the new number by the original number
129 - 985 = -856
-856 ÷ 985 = -0.8690355329949239
-0.8690355329949239 x 100 = -86.9%