30.68% is the change from 264 to 345
Calculation steps:
[( 345 - 264 ) ÷ 264] x 100 = 30.68%
Formula
Percentage change = [(345 - 264) / 264] x 100
Subtract the new number by the original number
345 - 264 = 81
81 ÷ 264 = 0.3068181818181818
0.3068181818181818 x 100 = 30.68%