-38.72% is the change from 390 to 239
Calculation steps:
[( 239 - 390 ) ÷ 390] x 100 = -38.72%
Formula
Percentage change = [(239 - 390) / 390] x 100
Subtract the new number by the original number
239 - 390 = -151
-151 ÷ 390 = -0.3871794871794872
-0.3871794871794872 x 100 = -38.72%