80.83% is the change from 339 to 613
Calculation steps:
[( 613 - 339 ) ÷ 339] x 100 = 80.83%
Formula
Percentage change = [(613 - 339) / 339] x 100
Subtract the new number by the original number
613 - 339 = 274
274 ÷ 339 = 0.8082595870206489
0.8082595870206489 x 100 = 80.83%