4.38% is the change from 457 to 477
Calculation steps:
[( 477 - 457 ) ÷ 457] x 100 = 4.38%
Formula
Percentage change = [(477 - 457) / 457] x 100
Subtract the new number by the original number
477 - 457 = 20
20 ÷ 457 = 0.0437636761487965
0.0437636761487965 x 100 = 4.38%