-38.28% is the change from 209 to 129
Calculation steps:
[( 129 - 209 ) ÷ 209] x 100 = -38.28%
Formula
Percentage change = [(129 - 209) / 209] x 100
Subtract the new number by the original number
129 - 209 = -80
-80 ÷ 209 = -0.3827751196172249
-0.3827751196172249 x 100 = -38.28%