-51.26% is the change from 673 to 328
Calculation steps:
[( 328 - 673 ) ÷ 673] x 100 = -51.26%
Formula
Percentage change = [(328 - 673) / 673] x 100
Subtract the new number by the original number
328 - 673 = -345
-345 ÷ 673 = -0.512630014858841
-0.512630014858841 x 100 = -51.26%