user: Question: What is the percentage of the popular vote when there were 90 seats available?
Columns: ['Year of election', 'Candidates elected', '# of seats available', '# of votes', '% of popular vote']
Types: ['real', 'real', 'real', 'text', 'text']
Sample row: [1934.0, 1.0, 90.0, 'n.a.', '7.0%']
SQL:

assistant: SELECT "% of popular vote" FROM "Table" WHERE "# of seats available" = 90.0;