11.04% is the change from 453 to 503
Calculation steps:
[( 503 - 453 ) ÷ 453] x 100 = 11.04%
Formula
Percentage change = [(503 - 453) / 453] x 100
Subtract the new number by the original number
503 - 453 = 50
50 ÷ 453 = 0.11037527593818984
0.11037527593818984 x 100 = 11.04%