-8.72% is the change from 390 to 356
Calculation steps:
[( 356 - 390 ) ÷ 390] x 100 = -8.72%
Formula
Percentage change = [(356 - 390) / 390] x 100
Subtract the new number by the original number
356 - 390 = -34
-34 ÷ 390 = -0.08717948717948718
-0.08717948717948718 x 100 = -8.72%