-0.98% is the change from 819 to 811
Calculation steps:
[( 811 - 819 ) ÷ 819] x 100 = -0.98%
Formula
Percentage change = [(811 - 819) / 819] x 100
Subtract the new number by the original number
811 - 819 = -8
-8 ÷ 819 = -0.009768009768009768
-0.009768009768009768 x 100 = -0.98%