142.73% is the change from 344 to 835
Calculation steps:
[( 835 - 344 ) ÷ 344] x 100 = 142.73%
Formula
Percentage change = [(835 - 344) / 344] x 100
Subtract the new number by the original number
835 - 344 = 491
491 ÷ 344 = 1.427325581395349
1.427325581395349 x 100 = 142.73%