-89.34% is the change from 797 to 85
Calculation steps:
[( 85 - 797 ) ÷ 797] x 100 = -89.34%
Formula
Percentage change = [(85 - 797) / 797] x 100
Subtract the new number by the original number
85 - 797 = -712
-712 ÷ 797 = -0.8933500627352572
-0.8933500627352572 x 100 = -89.34%