49.55% is the change from 331 to 495
Calculation steps:
[( 495 - 331 ) ÷ 331] x 100 = 49.55%
Formula
Percentage change = [(495 - 331) / 331] x 100
Subtract the new number by the original number
495 - 331 = 164
164 ÷ 331 = 0.4954682779456193
0.4954682779456193 x 100 = 49.55%