-50.37% is the change from 673 to 334
Calculation steps:
[( 334 - 673 ) ÷ 673] x 100 = -50.37%
Formula
Percentage change = [(334 - 673) / 673] x 100
Subtract the new number by the original number
334 - 673 = -339
-339 ÷ 673 = -0.5037147102526003
-0.5037147102526003 x 100 = -50.37%