-10.01% is the change from 809 to 728
Calculation steps:
[( 728 - 809 ) ÷ 809] x 100 = -10.01%
Formula
Percentage change = [(728 - 809) / 809] x 100
Subtract the new number by the original number
728 - 809 = -81
-81 ÷ 809 = -0.10012360939431397
-0.10012360939431397 x 100 = -10.01%