As SEO and SEM consultants, we here at Bloom Digital are often asked by our clients how their web sites percentage of traffic from organic search stacks up to competitors. There is no one-size-fits-all answer, as many factors such as channel spend, product/ service type, branding etc. can have an influence. That said, we do believe that it is helpful to site owners to understand where their traffic distribution fits relative to others in their industry.
In a recent study by conductor.com, it was discovered that on average nearly half of all site traffic originated from organic search.
Here is a chart that illustrates average traffic distribution by source.
For the full article, feel free to visit http://www.conductor.com/blog/2013/06/data-310-million-visits-nearly-half-of-all-web-site-traffic-comes-from-natural-search