26.47% is the change from 340 to 430
Calculation steps:
[( 430 - 340 ) ÷ 340] x 100 = 26.47%
Formula
Percentage change = [(430 - 340) / 340] x 100
Subtract the new number by the original number
430 - 340 = 90
90 ÷ 340 = 0.2647058823529412
0.2647058823529412 x 100 = 26.47%