Some (ANTI-ABORTION) groups estimate that as many as 25% of women who have abortions will have fertility problems in the future, while other (PRO-CHOICE) groups put the number at less than 1%.
Emphasis/addition mine. 1-25%? That's a wide gap. Spunds like a complete guess. And, frankly, they don't cite any sources of any kind, or where they're getting the information from, so who knows if it's even accurate?
From what seems a moderate source:
You'll have to forgive me if I doubt the neutrality of a source that plugs the LDS Church directly above the answer to an abortion question, and that is seemingly run by a company that caters to pregnant women, new mothers, and infants.
From the West End Medical Group of Reno, NV:
The Center for Disease Control conducted an extensive review of studies worldwide about the effect of abortion on future childbearing. They concluded that vacuum aspiration does not pose a measurable risk to a woman's childbearing ability. Compared to women who carry their first pregnancy to term, women who terminate their first pregnancy by vacuum aspiration abortion are at no greater risk of infertility or ectopic pregnancy in the future.
...
In general, complications from continuing a pregnancy to term are 10 times more frequent than terminating the pregnancy by surgical abortion.
From fertilityfacts.org:
The bottom line is that when an abortion has been conducted; legally, safely, professionally and providing there are no complications arising from it, there is no significant risk to the future fertility of the woman involved. ... a properly performed abortion will not affect the woman’s fertility.

