80.29% is the change from 340 to 613
Calculation steps:
[( 613 - 340 ) ÷ 340] x 100 = 80.29%
Formula
Percentage change = [(613 - 340) / 340] x 100
Subtract the new number by the original number
613 - 340 = 273
273 ÷ 340 = 0.8029411764705883
0.8029411764705883 x 100 = 80.29%