-12.13% is the change from 478 to 420
Calculation steps:
[( 420 - 478 ) ÷ 478] x 100 = -12.13%
Formula
Percentage change = [(420 - 478) / 478] x 100
Subtract the new number by the original number
420 - 478 = -58
-58 ÷ 478 = -0.12133891213389121
-0.12133891213389121 x 100 = -12.13%