-90.73% is the change from 809 to 75
Calculation steps:
[( 75 - 809 ) ÷ 809] x 100 = -90.73%
Formula
Percentage change = [(75 - 809) / 809] x 100
Subtract the new number by the original number
75 - 809 = -734
-734 ÷ 809 = -0.907292954264524
-0.907292954264524 x 100 = -90.73%