If the registered voters is 66.8%, what is the minimum population?
CREATE TABLE table_25200461_9 (
    population INTEGER,
    registered_voters VARCHAR
)
SELECT MIN(population) FROM table_25200461_9 WHERE registered_voters = "66.8%"
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: If the registered voters is 66.8%, what is the minimum population? ### Input: CREATE TABLE table_25200461_9 (
    population INTEGER,
    registered_voters VARCHAR
) ### Response: SELECT MIN(population) FROM table_25200461_9 WHERE registered_voters = "66.8%"