user: Question: What was the percentage of firefox was chrome was 23.90%
Columns: ['Date', 'Internet Explorer', 'Chrome', 'Firefox', 'Safari']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Desktop+Laptop', 'Mobile', 'Total', 'Desktop+Laptop', 'Total']
SQL:

assistant: SELECT "Firefox" FROM "Table" WHERE "Chrome" = '23.90%';