-86.56% is the change from 960 to 129
Calculation steps:
[( 129 - 960 ) ÷ 960] x 100 = -86.56%
Formula
Percentage change = [(129 - 960) / 960] x 100
Subtract the new number by the original number
129 - 960 = -831
-831 ÷ 960 = -0.865625
-0.865625 x 100 = -86.56%