Karma Percentages

[TheRagingMage]

What is the percentage after the Karma on people's pages?  For example, it says:
Karma                                                              12    (4.57%)

At first, I thought it was a percentage of total Karma, but my percentage was at 2% when I only had 2 Karma, and I know there is more than 100 karma when all of it is combined.  Also, it's fluctuating greatly, while my Karma is not.  For example, my percentage has been anywhere between 0.5% and 4% while my karma is still at 2.

[Vampyvyrus]

I believe it is post based. As in say you've posted 100 times and have had 10 people give you karma, putting your karma at 10. Your karma would be at 10%

Hope that makes sense

[TheRagingMage]

Thanks.