51.08% is the change from 323 to 488
Calculation steps:
[( 488 - 323 ) ÷ 323] x 100 = 51.08%
Formula
Percentage change = [(488 - 323) / 323] x 100
Subtract the new number by the original number
488 - 323 = 165
165 ÷ 323 = 0.5108359133126935
0.5108359133126935 x 100 = 51.08%