-20.16% is the change from 129 to 103
Calculation steps:
[( 103 - 129 ) ÷ 129] x 100 = -20.16%
Formula
Percentage change = [(103 - 129) / 129] x 100
Subtract the new number by the original number
103 - 129 = -26
-26 ÷ 129 = -0.20155038759689922
-0.20155038759689922 x 100 = -20.16%