-39.68% is the change from 630 to 380
Calculation steps:
[( 380 - 630 ) ÷ 630] x 100 = -39.68%
Formula
Percentage change = [(380 - 630) / 630] x 100
Subtract the new number by the original number
380 - 630 = -250
-250 ÷ 630 = -0.3968253968253968
-0.3968253968253968 x 100 = -39.68%