-88.93% is the change from 777 to 86
Calculation steps:
[( 86 - 777 ) ÷ 777] x 100 = -88.93%
Formula
Percentage change = [(86 - 777) / 777] x 100
Subtract the new number by the original number
86 - 777 = -691
-691 ÷ 777 = -0.8893178893178894
-0.8893178893178894 x 100 = -88.93%