For the sake of science.
What is the ratio between the total threads you have started in relation to total posts.
To find your total Threads started amount goto >quicklinks, my profile, clik on "Find all threads started by" , results are on the right.
To find your percentage :
Total posts / 100 = Z
Total threads started / Z = Total Percentage
7591 / 100 = 75.91
836 / 75.91 = 11%