31.92% is the change from 260 to 343
Calculation steps:
[( 343 - 260 ) ÷ 260] x 100 = 31.92%
Formula
Percentage change = [(343 - 260) / 260] x 100
Subtract the new number by the original number
343 - 260 = 83
83 ÷ 260 = 0.3192307692307692
0.3192307692307692 x 100 = 31.92%