How to get rankings back??

[motionz]

Are you sure that your site has not been hit by any search algorithm?

Yeah, I am sure. As this happening from before the panda update.

Google Panda is an algorithm which identifies low quality content. So,
if you are sure that you rankings has fall after Panda update then build quality content on your site more and more, along with suitable keywords on header, meta description and body tags. It will get you rankings back.