11.11% is the change from 405 to 450
Calculation steps:
[( 450 - 405 ) ÷ 405] x 100 = 11.11%
Formula
Percentage change = [(450 - 405) / 405] x 100
Subtract the new number by the original number
450 - 405 = 45
45 ÷ 405 = 0.1111111111111111
0.1111111111111111 x 100 = 11.11%