-0.61% is the change from 823 to 818
Calculation steps:
[( 818 - 823 ) ÷ 823] x 100 = -0.61%
Formula
Percentage change = [(818 - 823) / 823] x 100
Subtract the new number by the original number
818 - 823 = -5
-5 ÷ 823 = -0.006075334143377886
-0.006075334143377886 x 100 = -0.61%