Whenever you vote to add time, it just uses the percentage. For some reason the wiki assumes it'll always be 5% - which is of course not true; and with the default 10% you have a 1 in 10 chance. 50% and roughly every second vote will add time for you, 100% and it is for every vote.

Are you sure you're testing add votes? Sub votes don't count.

86 add votes today so far, at least 100 yesterday.

Between the two days I have had one risky voting hit.

Based on the past few days it is seeming like I am averaging about .5%

I have been poking around and looking at some other people sessions and seeing what has to be proper percentage.

I was thinking it was the session settings, but I had this on a different session as well.

She has the tools she needs to add or subtract the time, more that she and this one wish to know how the risky voting tool works as it is inconsistent.

If I am not mistaken, this percentage indicates how much you will be added from time to time, which is added during the vote.