-52.67% is the change from 843 to 399
Calculation steps:
[( 399 - 843 ) ÷ 843] x 100 = -52.67%
Formula
Percentage change = [(399 - 843) / 843] x 100
Subtract the new number by the original number
399 - 843 = -444
-444 ÷ 843 = -0.5266903914590747
-0.5266903914590747 x 100 = -52.67%