Many anti-abortion sources, such as the ones quoted by this Washington Post fact-check, counter Planned Parenthood's claim that only 3% of its services are abortions with the claim that a large amount of its revenues come from abortion. The most reasonable source I could find is this 2012 analysis by James J. Heaney, a software engineer who writes for The Federalist:
This chart assumes that the mean cost of an abortion at Planned Parenthood is $650. Planned Parenthood does not provide this information, presumably because it would allow someone to make a chart very much like this. We did the best we could, while still sticking to our plan to rely exclusively on information provided by Planned Parenthood. [...] Planned Parenthood provided 331,796 abortions in 2009. Approximately 10% of all clients (counting men) received an abortion.
Note that the author added a footnote correcting an error in the chart:
EDIT: Apparently, I am math-challenged tonight. Splitting the difference between $300 and $950 yields a mean of $625, not $650. If this were reflected on the chart, it would take away 1% from the Abortion wedge (leaving it at 19%) and add 1% to the Medical Services wedge (raising it to 18%). I will fix this at some point, when I have time.
I would expect these numbers to be slightly larger now that Planned Parenthood is doing more abortions and less of other medical services, so feel free to correct the data if you can update it, but otherwise we can stick to 2012 for the sake of discussion.
Is this 19% figure a reasonable estimate given the lack of official figures?