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_256286_61 ( type VARCHAR, _percentage_yes VARCHAR )

### Question ###
How many type catagories are listed when the percentage of yes is 68.91%?

### Accurate SQL ###

SELECT COUNT(type) FROM table_256286_61 WHERE _percentage_yes = "68.91%"