-89.36% is the change from 799 to 85
Calculation steps:
[( 85 - 799 ) ÷ 799] x 100 = -89.36%
Formula
Percentage change = [(85 - 799) / 799] x 100
Subtract the new number by the original number
85 - 799 = -714
-714 ÷ 799 = -0.8936170212765957
-0.8936170212765957 x 100 = -89.36%