-2.19% is the change from 823 to 805
Calculation steps:
[( 805 - 823 ) ÷ 823] x 100 = -2.19%
Formula
Percentage change = [(805 - 823) / 823] x 100
Subtract the new number by the original number
805 - 823 = -18
-18 ÷ 823 = -0.02187120291616039
-0.02187120291616039 x 100 = -2.19%