When you're on the home page, click on the blue "view all", to the right of the recent transactions. The link brings you a page that has a big blue banner on top where you can click "return to previous version"
Thing I hate about the new site, is all my additional cards have my name on it, and there is no way to see which charges went on which card. They all have the same initials. Old version lets you sort by card number with a dropdown of all your cards
@Dan, your link is not working for me anymore. Takes me to dashboard and from there to new interface. Any new links?