-89.45% is the change from 806 to 85
Calculation steps:
[( 85 - 806 ) ÷ 806] x 100 = -89.45%
Formula
Percentage change = [(85 - 806) / 806] x 100
Subtract the new number by the original number
85 - 806 = -721
-721 ÷ 806 = -0.8945409429280397
-0.8945409429280397 x 100 = -89.45%