-90.83% is the change from 872 to 80
Calculation steps:
[( 80 - 872 ) ÷ 872] x 100 = -90.83%
Formula
Percentage change = [(80 - 872) / 872] x 100
Subtract the new number by the original number
80 - 872 = -792
-792 ÷ 872 = -0.908256880733945
-0.908256880733945 x 100 = -90.83%