140.69% is the change from 349 to 840
Calculation steps:
[( 840 - 349 ) ÷ 349] x 100 = 140.69%
Formula
Percentage change = [(840 - 349) / 349] x 100
Subtract the new number by the original number
840 - 349 = 491
491 ÷ 349 = 1.4068767908309456
1.4068767908309456 x 100 = 140.69%