-90.48% is the change from 809 to 77
Calculation steps:
[( 77 - 809 ) ÷ 809] x 100 = -90.48%
Formula
Percentage change = [(77 - 809) / 809] x 100
Subtract the new number by the original number
77 - 809 = -732
-732 ÷ 809 = -0.9048207663782447
-0.9048207663782447 x 100 = -90.48%