Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_19744915_22 ( couple VARCHAR, vote_percentage VARCHAR )

### Question ###
What couple had vote percentage of 21.843%?

### Accurate SQL ###

SELECT couple FROM table_19744915_22 WHERE vote_percentage = "21.843%"