-76.78% is the change from 366 to 85
Calculation steps:
[( 85 - 366 ) ÷ 366] x 100 = -76.78%
Formula
Percentage change = [(85 - 366) / 366] x 100
Subtract the new number by the original number
85 - 366 = -281
-281 ÷ 366 = -0.76775956284153
-0.76775956284153 x 100 = -76.78%