When our site traffic is being affected we need to check what did it effect on the site whether it is panda or penguin. To check what it effects on the site you need to sign in on penguin tool account for this you need to have google analytics account. Penguin tool shows the traffic to your account, it shows graphs and matches with the penguin and panda updates.
Step1: Login to your analytics account then penguin tool
Step2: Enter your site to check the details