user: Question: How many type catagories are listed when the percentage of yes is 68.91%?
Columns: ['meas. num.', 'passed', 'YES votes', 'NO votes', '% YES', 'Const. Amd.?', 'type', 'description']
Types: ['real', 'text', 'real', 'real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'No', 353357.0, 384521.0, '47.89%', 'Yes', 'LEG', 'Liquor licenses for public passenger carriers']
SQL:

assistant: SELECT COUNT("type") FROM "Table" WHERE "% YES" = '68.91%';