-51.86% is the change from 673 to 324
Calculation steps:
[( 324 - 673 ) ÷ 673] x 100 = -51.86%
Formula
Percentage change = [(324 - 673) / 673] x 100
Subtract the new number by the original number
324 - 673 = -349
-349 ÷ 673 = -0.5185735512630015
-0.5185735512630015 x 100 = -51.86%