-9.23% is the change from 390 to 354
Calculation steps:
[( 354 - 390 ) ÷ 390] x 100 = -9.23%
Formula
Percentage change = [(354 - 390) / 390] x 100
Subtract the new number by the original number
354 - 390 = -36
-36 ÷ 390 = -0.09230769230769231
-0.09230769230769231 x 100 = -9.23%