-19.15% is the change from 470 to 380
Calculation steps:
[( 380 - 470 ) ÷ 470] x 100 = -19.15%
Formula
Percentage change = [(380 - 470) / 470] x 100
Subtract the new number by the original number
380 - 470 = -90
-90 ÷ 470 = -0.19148936170212766
-0.19148936170212766 x 100 = -19.15%