Google AdSense Revenue Share
A couple of months back, Google made the revenue share of its Publishers public. This was a great move from Google’s part.
You can see the revenue share percentage yourself from the AdSense Dashboard.
Login to your AdSense account. Goto > My Account > Account Settings and scroll to the bottom of the Page.
AdSense for Content: 68 % publisher revenue share
AdSense for Search: 51 % publisher revenue share
From AdSense Support: We believe our revenue share is extremely competitive. However, revenue shares alone can be misleading, so we encourage you to focus on the total revenue generated for your site. For example, if the Google ads on your site generate $100, with our 68% revenue share you’d receive $68 through AdSense. Another ad network might offer an 80% revenue share, but only collect $50 from advertisers, so you’d receive $40.
Sources: The Adsense blog | Adsense QnAs