9.87% is the change from 456 to 501
Calculation steps:
[( 501 - 456 ) ÷ 456] x 100 = 9.87%
Formula
Percentage change = [(501 - 456) / 456] x 100
Subtract the new number by the original number
501 - 456 = 45
45 ÷ 456 = 0.09868421052631579
0.09868421052631579 x 100 = 9.87%