120% is the change from 225 to 495
Calculation steps:
[( 495 - 225 ) ÷ 225] x 100 = 120%
Formula
Percentage change = [(495 - 225) / 225] x 100
Subtract the new number by the original number
495 - 225 = 270
270 ÷ 225 = 1.2
1.2 x 100 = 120%
Example