-53.74% is the change from 843 to 390
Calculation steps:
[( 390 - 843 ) ÷ 843] x 100 = -53.74%
Formula
Percentage change = [(390 - 843) / 843] x 100
Subtract the new number by the original number
390 - 843 = -453
-453 ÷ 843 = -0.5373665480427047
-0.5373665480427047 x 100 = -53.74%