-9.83% is the change from 478 to 431
Calculation steps:
[( 431 - 478 ) ÷ 478] x 100 = -9.83%
Formula
Percentage change = [(431 - 478) / 478] x 100
Subtract the new number by the original number
431 - 478 = -47
-47 ÷ 478 = -0.09832635983263599
-0.09832635983263599 x 100 = -9.83%