4.25% is the change from 471 to 491
Calculation steps:
[( 491 - 471 ) ÷ 471] x 100 = 4.25%
Formula
Percentage change = [(491 - 471) / 471] x 100
Subtract the new number by the original number
491 - 471 = 20
20 ÷ 471 = 0.04246284501061571
0.04246284501061571 x 100 = 4.25%