Overview report in referrer reports (classic)
The first report presents a summary of data about your website referrers, that’s why it is called an “Overview”. It presents this information in the form of graphs and sparklines, so you can get a visual representation of changes in your referrers.
It also lets you compare various sources which brought your visitors to your website and automatically displays the percentage of all visits and change compared to previous periods of time (as you can specify while segmenting the group). The Overview provides a perfect starting point for analyzing referrers on your website. You can easily catch any peaks and other abnormalities and then focus on determining why they happened.
Tip: You can use segments on all of those reports. This option multiplies your reports, lets you analyze every group you need, and provides you the most detailed and specific data.