How many more percentage of risk of poverty among young people 18-29  than among children 0-17?
return young people that are 18-29 ;return children that are 0-17 ;return risk of poverty in  percentage of  #1 ;return risk of poverty in  percentage of  #2 ;return the  difference of #3 and  #4
['select', 'select', 'project', 'project', 'arithmetic']