-0.86% is the change from 816 to 809
Calculation steps:
[( 809 - 816 ) ÷ 816] x 100 = -0.86%
Formula
Percentage change = [(809 - 816) / 816] x 100
Subtract the new number by the original number
809 - 816 = -7
-7 ÷ 816 = -0.00857843137254902
-0.00857843137254902 x 100 = -0.86%