-18.6% is the change from 129 to 105
Calculation steps:
[( 105 - 129 ) ÷ 129] x 100 = -18.6%
Formula
Percentage change = [(105 - 129) / 129] x 100
Subtract the new number by the original number
105 - 129 = -24
-24 ÷ 129 = -0.18604651162790697
-0.18604651162790697 x 100 = -18.6%