-91.12% is the change from 867 to 77
Calculation steps:
[( 77 - 867 ) ÷ 867] x 100 = -91.12%
Formula
Percentage change = [(77 - 867) / 867] x 100
Subtract the new number by the original number
77 - 867 = -790
-790 ÷ 867 = -0.9111880046136102
-0.9111880046136102 x 100 = -91.12%