73.82% is the change from 340 to 591
Calculation steps:
[( 591 - 340 ) ÷ 340] x 100 = 73.82%
Formula
Percentage change = [(591 - 340) / 340] x 100
Subtract the new number by the original number
591 - 340 = 251
251 ÷ 340 = 0.7382352941176471
0.7382352941176471 x 100 = 73.82%