-16.28% is the change from 129 to 108
Calculation steps:
[( 108 - 129 ) ÷ 129] x 100 = -16.28%
Formula
Percentage change = [(108 - 129) / 129] x 100
Subtract the new number by the original number
108 - 129 = -21
-21 ÷ 129 = -0.16279069767441862
-0.16279069767441862 x 100 = -16.28%