Table schema:
CREATE TABLE table_name_87 (obesity_rank VARCHAR, overweight__incl_obese__adults VARCHAR, state_and_district_of_columbia VARCHAR)

Question: What's the rank in West Virginia when the overweight adult was 66.8%?
SQL: SELECT obesity_rank FROM table_name_87 WHERE overweight__incl_obese__adults = "66.8%" AND state_and_district_of_columbia = "west virginia"