-81.34% is the change from 209 to 39
Calculation steps:
[( 39 - 209 ) ÷ 209] x 100 = -81.34%
Formula
Percentage change = [(39 - 209) / 209] x 100
Subtract the new number by the original number
39 - 209 = -170
-170 ÷ 209 = -0.8133971291866029
-0.8133971291866029 x 100 = -81.34%