Unless you have a whole other previous version of Evernote on a different machine that hasn't been upgraded, I don't believe you can downgrade. For example, on my MacBook Air I tried removed the current app and replaced it with a backup from a year ago. When I fired it up, I got a message saying that the "local database" is not compatible with the older app. On my MacBook Pro from 2009, I am not able to upgrade Evernote anymore.. which is a blessing because on that machine, the Evernote app is able to copy/paste things... so yeah...
I've already started to redo my most important day to day templates in MS Word... copying out the text is at least possible and I just recreate the screenshots. There is a note above in this thread where I show how you can export a note to PDF and then copy/paste from there...