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_name_12 ( country VARCHAR, debt_as__percentage_of_value VARCHAR, _percentage_change_on_year VARCHAR )

### Question ###
Name the country where % change on year is 21 and value is less than 86

### Accurate SQL ###

SELECT country FROM table_name_12 WHERE debt_as__percentage_of_value < 86 AND _percentage_change_on_year = "21"