-10.78% is the change from 816 to 728
Calculation steps:
[( 728 - 816 ) ÷ 816] x 100 = -10.78%
Formula
Percentage change = [(728 - 816) / 816] x 100
Subtract the new number by the original number
728 - 816 = -88
-88 ÷ 816 = -0.10784313725490197
-0.10784313725490197 x 100 = -10.78%