-9% is the change from 867 to 789
Calculation steps:
[( 789 - 867 ) ÷ 867] x 100 = -9%
Formula
Percentage change = [(789 - 867) / 867] x 100
Subtract the new number by the original number
789 - 867 = -78
-78 ÷ 867 = -0.08996539792387544
-0.08996539792387544 x 100 = -9%