54.69% is the change from 320 to 495
Calculation steps:
[( 495 - 320 ) ÷ 320] x 100 = 54.69%
Formula
Percentage change = [(495 - 320) / 320] x 100
Subtract the new number by the original number
495 - 320 = 175
175 ÷ 320 = 0.546875
0.546875 x 100 = 54.69%