-42.22% is the change from 675 to 390
Calculation steps:
[( 390 - 675 ) ÷ 675] x 100 = -42.22%
Formula
Percentage change = [(390 - 675) / 675] x 100
Subtract the new number by the original number
390 - 675 = -285
-285 ÷ 675 = -0.4222222222222222
-0.4222222222222222 x 100 = -42.22%