-1.23% is the change from 816 to 806
Calculation steps:
[( 806 - 816 ) ÷ 816] x 100 = -1.23%
Formula
Percentage change = [(806 - 816) / 816] x 100
Subtract the new number by the original number
806 - 816 = -10
-10 ÷ 816 = -0.012254901960784314
-0.012254901960784314 x 100 = -1.23%