-46.41% is the change from 390 to 209
Calculation steps:
[( 209 - 390 ) ÷ 390] x 100 = -46.41%
Formula
Percentage change = [(209 - 390) / 390] x 100
Subtract the new number by the original number
209 - 390 = -181
-181 ÷ 390 = -0.4641025641025641
-0.4641025641025641 x 100 = -46.41%