78.49% is the change from 344 to 614
Calculation steps:
[( 614 - 344 ) ÷ 344] x 100 = 78.49%
Formula
Percentage change = [(614 - 344) / 344] x 100
Subtract the new number by the original number
614 - 344 = 270
270 ÷ 344 = 0.7848837209302325
0.7848837209302325 x 100 = 78.49%