How many percentage points had Samsung Share decreased from the first quarter in 2014 into the fourth quarter of 2014?
return Samsung ;return Share of #1 ;return #2 in  the  first quarter of 2014  ;return #2 in  the  fourth quarter of 2014  ;return percentage of #3 ;return percentage of #4 ;return the  difference of #6 and  #5
['select', 'project', 'filter', 'filter', 'project', 'project', 'arithmetic']