-9.68% is the change from 806 to 728
Calculation steps:
[( 728 - 806 ) ÷ 806] x 100 = -9.68%
Formula
Percentage change = [(728 - 806) / 806] x 100
Subtract the new number by the original number
728 - 806 = -78
-78 ÷ 806 = -0.0967741935483871
-0.0967741935483871 x 100 = -9.68%