Tumblr traffic ?

I have a Tumblr blog, more than 1.25K followers. And good traffic almost 800-900 per day.
My blog traffic is continually falling from last 2-3 days along with new follower?s rate. Anybody experiences the same issue. Please share your experience. Help me please.

Check where your site ranks for your top keywords. If your rankings have dropped, it might be a penalty.