How many more percent of people were Indo-Guyanese than African in 2002?
return people ;return #1 that were Indo-Guyanese ;return #2 in  2002 ;return #1 that were African ;return #4 in  2002 ;return percent of #3 ;return percent of #5 ;return difference of #6 and  #7
['select', 'filter', 'filter', 'filter', 'filter', 'project', 'project', 'arithmetic']