76.47% is the change from 340 to 600
Calculation steps:
[( 600 - 340 ) ÷ 340] x 100 = 76.47%
Formula
Percentage change = [(600 - 340) / 340] x 100
Subtract the new number by the original number
600 - 340 = 260
260 ÷ 340 = 0.7647058823529411
0.7647058823529411 x 100 = 76.47%