138.71% is the change from 341 to 814
Calculation steps:
[( 814 - 341 ) ÷ 341] x 100 = 138.71%
Formula
Percentage change = [(814 - 341) / 341] x 100
Subtract the new number by the original number
814 - 341 = 473
473 ÷ 341 = 1.3870967741935485
1.3870967741935485 x 100 = 138.71%