-98.65% is the change from 816 to 11
Calculation steps:
[( 11 - 816 ) ÷ 816] x 100 = -98.65%
Formula
Percentage change = [(11 - 816) / 816] x 100
Subtract the new number by the original number
11 - 816 = -805
-805 ÷ 816 = -0.9865196078431373
-0.9865196078431373 x 100 = -98.65%