-55.02% is the change from 867 to 390
Calculation steps:
[( 390 - 867 ) ÷ 867] x 100 = -55.02%
Formula
Percentage change = [(390 - 867) / 867] x 100
Subtract the new number by the original number
390 - 867 = -477
-477 ÷ 867 = -0.5501730103806228
-0.5501730103806228 x 100 = -55.02%