-96.9% is the change from 129 to 4
Calculation steps:
[( 4 - 129 ) ÷ 129] x 100 = -96.9%
Formula
Percentage change = [(4 - 129) / 129] x 100
Subtract the new number by the original number
4 - 129 = -125
-125 ÷ 129 = -0.9689922480620154
-0.9689922480620154 x 100 = -96.9%