Most probably there was something went wrong while updating answers vote count. As I can see 2,1,0,1 - so one vote for the third option is not updated. I am not exactly sure why it happened but it may be some database error or some other system error.
Can you let me know how many rows inserted into xxx_jcp_votes table and the values?
votes.png (You do not have access to download this file.)
pollsetup.png (You do not have access to download this file.)
So the custom answer is what takes one vote. Probably what I thought is wrong on user perspective. I am counting custom answer also as one vote, but since it is not belong to any answer, the answer shows wrong percentage. It is at line 1594 of components/com_communitypolls/models/polls.php
corejoomla.com is not affiliated with or endorsed by the Joomla! Project or Open Source Matters. The Joomla! name and logo is used under a limited license granted by Open Source Matters the trademark holder in the United States and other countries.