-15.56% is the change from 450 to 380
Calculation steps:
[( 380 - 450 ) ÷ 450] x 100 = -15.56%
Formula
Percentage change = [(380 - 450) / 450] x 100
Subtract the new number by the original number
380 - 450 = -70
-70 ÷ 450 = -0.15555555555555556
-0.15555555555555556 x 100 = -15.56%