-11.74% is the change from 477 to 421
Calculation steps:
[( 421 - 477 ) ÷ 477] x 100 = -11.74%
Formula
Percentage change = [(421 - 477) / 477] x 100
Subtract the new number by the original number
421 - 477 = -56
-56 ÷ 477 = -0.11740041928721175
-0.11740041928721175 x 100 = -11.74%