How many fewer percent of non-Hispanic Whites were there in 2010 compared to 1970?
return non-Hispanic Whites ;return #1 in  2010 ;return #1 in  1970 ;return percent of #2 ;return percent of #3 ;return difference of #5 and  #4
['select', 'filter', 'filter', 'project', 'project', 'arithmetic']