-19.04% is the change from 478 to 387
Calculation steps:
[( 387 - 478 ) ÷ 478] x 100 = -19.04%
Formula
Percentage change = [(387 - 478) / 478] x 100
Subtract the new number by the original number
387 - 478 = -91
-91 ÷ 478 = -0.1903765690376569
-0.1903765690376569 x 100 = -19.04%