-49.48% is the change from 673 to 340
Calculation steps:
[( 340 - 673 ) ÷ 673] x 100 = -49.48%
Formula
Percentage change = [(340 - 673) / 673] x 100
Subtract the new number by the original number
340 - 673 = -333
-333 ÷ 673 = -0.4947994056463596
-0.4947994056463596 x 100 = -49.48%