-42.05% is the change from 673 to 390
Calculation steps:
[( 390 - 673 ) ÷ 673] x 100 = -42.05%
Formula
Percentage change = [(390 - 673) / 673] x 100
Subtract the new number by the original number
390 - 673 = -283
-283 ÷ 673 = -0.42050520059435365
-0.42050520059435365 x 100 = -42.05%