-89.07% is the change from 778 to 85
Calculation steps:
[( 85 - 778 ) ÷ 778] x 100 = -89.07%
Formula
Percentage change = [(85 - 778) / 778] x 100
Subtract the new number by the original number
85 - 778 = -693
-693 ÷ 778 = -0.890745501285347
-0.890745501285347 x 100 = -89.07%