-0.86% is the change from 813 to 806
Calculation steps:
[( 806 - 813 ) ÷ 813] x 100 = -0.86%
Formula
Percentage change = [(806 - 813) / 813] x 100
Subtract the new number by the original number
806 - 813 = -7
-7 ÷ 813 = -0.008610086100861008
-0.008610086100861008 x 100 = -0.86%