31.06% is the change from 264 to 346
Calculation steps:
[( 346 - 264 ) ÷ 264] x 100 = 31.06%
Formula
Percentage change = [(346 - 264) / 264] x 100
Subtract the new number by the original number
346 - 264 = 82
82 ÷ 264 = 0.3106060606060606
0.3106060606060606 x 100 = 31.06%