136.63% is the change from 344 to 814
Calculation steps:
[( 814 - 344 ) ÷ 344] x 100 = 136.63%
Formula
Percentage change = [(814 - 344) / 344] x 100
Subtract the new number by the original number
814 - 344 = 470
470 ÷ 344 = 1.3662790697674418
1.3662790697674418 x 100 = 136.63%