123.56% is the change from 225 to 503
Calculation steps:
[( 503 - 225 ) ÷ 225] x 100 = 123.56%
Formula
Percentage change = [(503 - 225) / 225] x 100
Subtract the new number by the original number
503 - 225 = 278
278 ÷ 225 = 1.2355555555555555
1.2355555555555555 x 100 = 123.56%