6.65% is the change from 451 to 481
Calculation steps:
[( 481 - 451 ) ÷ 451] x 100 = 6.65%
Formula
Percentage change = [(481 - 451) / 451] x 100
Subtract the new number by the original number
481 - 451 = 30
30 ÷ 451 = 0.06651884700665188
0.06651884700665188 x 100 = 6.65%