-12.32% is the change from 479 to 420
Calculation steps:
[( 420 - 479 ) ÷ 479] x 100 = -12.32%
Formula
Percentage change = [(420 - 479) / 479] x 100
Subtract the new number by the original number
420 - 479 = -59
-59 ÷ 479 = -0.12317327766179541
-0.12317327766179541 x 100 = -12.32%