<p>Undeclared engineering was 12.9% last year. The only one I know for 2014 is CS because I went to the CS open house, but the link shows you the 2013 (and prior) acceptance rates. </p>
<p><a href=“http://www.seasoasa.ucla.edu/UCEE%20Report%203_7_14.pdf”>http://www.seasoasa.ucla.edu/UCEE%20Report%203_7_14.pdf</a></p>