-89.33% is the change from 806 to 86
Calculation steps:
[( 86 - 806 ) ÷ 806] x 100 = -89.33%
Formula
Percentage change = [(86 - 806) / 806] x 100
Subtract the new number by the original number
86 - 806 = -720
-720 ÷ 806 = -0.8933002481389578
-0.8933002481389578 x 100 = -89.33%