-86.85% is the change from 981 to 129
Calculation steps:
[( 129 - 981 ) ÷ 981] x 100 = -86.85%
Formula
Percentage change = [(129 - 981) / 981] x 100
Subtract the new number by the original number
129 - 981 = -852
-852 ÷ 981 = -0.8685015290519877
-0.8685015290519877 x 100 = -86.85%