-51.11% is the change from 673 to 329
Calculation steps:
[( 329 - 673 ) ÷ 673] x 100 = -51.11%
Formula
Percentage change = [(329 - 673) / 673] x 100
Subtract the new number by the original number
329 - 673 = -344
-344 ÷ 673 = -0.5111441307578009
-0.5111441307578009 x 100 = -51.11%