-24.27% is the change from 853 to 646
Calculation steps:
[( 646 - 853 ) ÷ 853] x 100 = -24.27%
Formula
Percentage change = [(646 - 853) / 853] x 100
Subtract the new number by the original number
646 - 853 = -207
-207 ÷ 853 = -0.24267291910902697
-0.24267291910902697 x 100 = -24.27%