-90.89% is the change from 867 to 79
Calculation steps:
[( 79 - 867 ) ÷ 867] x 100 = -90.89%
Formula
Percentage change = [(79 - 867) / 867] x 100
Subtract the new number by the original number
79 - 867 = -788
-788 ÷ 867 = -0.908881199538639
-0.908881199538639 x 100 = -90.89%