-89.47% is the change from 807 to 85
Calculation steps:
[( 85 - 807 ) ÷ 807] x 100 = -89.47%
Formula
Percentage change = [(85 - 807) / 807] x 100
Subtract the new number by the original number
85 - 807 = -722
-722 ÷ 807 = -0.8946716232961586
-0.8946716232961586 x 100 = -89.47%