-87.97% is the change from 806 to 97
Calculation steps:
[( 97 - 806 ) ÷ 806] x 100 = -87.97%
Formula
Percentage change = [(97 - 806) / 806] x 100
Subtract the new number by the original number
97 - 806 = -709
-709 ÷ 806 = -0.8796526054590571
-0.8796526054590571 x 100 = -87.97%