-86.82% is the change from 129 to 17
Calculation steps:
[( 17 - 129 ) ÷ 129] x 100 = -86.82%
Formula
Percentage change = [(17 - 129) / 129] x 100
Subtract the new number by the original number
17 - 129 = -112
-112 ÷ 129 = -0.8682170542635659
-0.8682170542635659 x 100 = -86.82%