71.18% is the change from 340 to 582
Calculation steps:
[( 582 - 340 ) ÷ 340] x 100 = 71.18%
Formula
Percentage change = [(582 - 340) / 340] x 100
Subtract the new number by the original number
582 - 340 = 242
242 ÷ 340 = 0.711764705882353
0.711764705882353 x 100 = 71.18%