-89.09% is the change from 779 to 85
Calculation steps:
[( 85 - 779 ) ÷ 779] x 100 = -89.09%
Formula
Percentage change = [(85 - 779) / 779] x 100
Subtract the new number by the original number
85 - 779 = -694
-694 ÷ 779 = -0.8908857509627728
-0.8908857509627728 x 100 = -89.09%