9.31% is the change from 451 to 493
Calculation steps:
[( 493 - 451 ) ÷ 451] x 100 = 9.31%
Formula
Percentage change = [(493 - 451) / 451] x 100
Subtract the new number by the original number
493 - 451 = 42
42 ÷ 451 = 0.09312638580931264
0.09312638580931264 x 100 = 9.31%