100.88% is the change from 339 to 681
Calculation steps:
[( 681 - 339 ) ÷ 339] x 100 = 100.88%
Formula
Percentage change = [(681 - 339) / 339] x 100
Subtract the new number by the original number
681 - 339 = 342
342 ÷ 339 = 1.008849557522124
1.008849557522124 x 100 = 100.88%