23.48% is the change from 345 to 426
Calculation steps:
[( 426 - 345 ) ÷ 345] x 100 = 23.48%
Formula
Percentage change = [(426 - 345) / 345] x 100
Subtract the new number by the original number
426 - 345 = 81
81 ÷ 345 = 0.23478260869565218
0.23478260869565218 x 100 = 23.48%