148.55% is the change from 344 to 855
Calculation steps:
[( 855 - 344 ) ÷ 344] x 100 = 148.55%
Formula
Percentage change = [(855 - 344) / 344] x 100
Subtract the new number by the original number
855 - 344 = 511
511 ÷ 344 = 1.4854651162790697
1.4854651162790697 x 100 = 148.55%