79.94% is the change from 339 to 610
Calculation steps:
[( 610 - 339 ) ÷ 339] x 100 = 79.94%
Formula
Percentage change = [(610 - 339) / 339] x 100
Subtract the new number by the original number
610 - 339 = 271
271 ÷ 339 = 0.799410029498525
0.799410029498525 x 100 = 79.94%