-91.47% is the change from 129 to 11
Calculation steps:
[( 11 - 129 ) ÷ 129] x 100 = -91.47%
Formula
Percentage change = [(11 - 129) / 129] x 100
Subtract the new number by the original number
11 - 129 = -118
-118 ÷ 129 = -0.9147286821705426
-0.9147286821705426 x 100 = -91.47%