149.27% is the change from 343 to 855
Calculation steps:
[( 855 - 343 ) ÷ 343] x 100 = 149.27%
Formula
Percentage change = [(855 - 343) / 343] x 100
Subtract the new number by the original number
855 - 343 = 512
512 ÷ 343 = 1.4927113702623906
1.4927113702623906 x 100 = 149.27%