9.23% is the change from 455 to 497
Calculation steps:
[( 497 - 455 ) ÷ 455] x 100 = 9.23%
Formula
Percentage change = [(497 - 455) / 455] x 100
Subtract the new number by the original number
497 - 455 = 42
42 ÷ 455 = 0.09230769230769231
0.09230769230769231 x 100 = 9.23%