-4.19% is the change from 477 to 457
Calculation steps:
[( 457 - 477 ) ÷ 477] x 100 = -4.19%
Formula
Percentage change = [(457 - 477) / 477] x 100
Subtract the new number by the original number
457 - 477 = -20
-20 ÷ 477 = -0.041928721174004195
-0.041928721174004195 x 100 = -4.19%