-86.77% is the change from 975 to 129
Calculation steps:
[( 129 - 975 ) ÷ 975] x 100 = -86.77%
Formula
Percentage change = [(129 - 975) / 975] x 100
Subtract the new number by the original number
129 - 975 = -846
-846 ÷ 975 = -0.8676923076923077
-0.8676923076923077 x 100 = -86.77%