-3.23% is the change from 867 to 839
Calculation steps:
[( 839 - 867 ) ÷ 867] x 100 = -3.23%
Formula
Percentage change = [(839 - 867) / 867] x 100
Subtract the new number by the original number
839 - 867 = -28
-28 ÷ 867 = -0.03229527104959631
-0.03229527104959631 x 100 = -3.23%