302.44% is the change from 123 to 495
Calculation steps:
[( 495 - 123 ) ÷ 123] x 100 = 302.44%
Formula
Percentage change = [(495 - 123) / 123] x 100
Subtract the new number by the original number
495 - 123 = 372
372 ÷ 123 = 3.024390243902439
3.024390243902439 x 100 = 302.44%