How many more, in percentage, were households made up of were Marriage living together than had children under the age of 18 living with them?
return households ;return #1 that were made up of Marriage living  together ;return #1 that had children under the  age of 18 living  with them ;return percentage of #2 ;return percentage of #3 ;return difference of #4 and  #5
['select', 'filter', 'filter', 'project', 'project', 'arithmetic']