-21.1% is the change from 853 to 673
Calculation steps:
[( 673 - 853 ) ÷ 853] x 100 = -21.1%
Formula
Percentage change = [(673 - 853) / 853] x 100
Subtract the new number by the original number
673 - 853 = -180
-180 ÷ 853 = -0.21101992966002345
-0.21101992966002345 x 100 = -21.1%