-91.05% is the change from 860 to 77
Calculation steps:
[( 77 - 860 ) ÷ 860] x 100 = -91.05%
Formula
Percentage change = [(77 - 860) / 860] x 100
Subtract the new number by the original number
77 - 860 = -783
-783 ÷ 860 = -0.9104651162790698
-0.9104651162790698 x 100 = -91.05%