-1.24% is the change from 809 to 799
Calculation steps:
[( 799 - 809 ) ÷ 809] x 100 = -1.24%
Formula
Percentage change = [(799 - 809) / 809] x 100
Subtract the new number by the original number
799 - 809 = -10
-10 ÷ 809 = -0.012360939431396786
-0.012360939431396786 x 100 = -1.24%