-37.9% is the change from 628 to 390
Calculation steps:
[( 390 - 628 ) ÷ 628] x 100 = -37.9%
Formula
Percentage change = [(390 - 628) / 628] x 100
Subtract the new number by the original number
390 - 628 = -238
-238 ÷ 628 = -0.37898089171974525
-0.37898089171974525 x 100 = -37.9%