Right, but presumably it was 21% in meta, not 0.21%. Usually you calculate a precent by first calculating the ratio and then multiplying x100 and adding the % sign. It looks to me like they forgot the multiply by 100 step. Or maybe I'm wrong and it's only giving me info about 0.78% of my posts (that would be weird, though, more likely that this info covers 78% of my posts, right?)
You didn't get what I said
It's not
Development & Technical Discussion has ( 108348 - 27558(subforums) ) = 80790 posts.
According to my stats, my ratio is 0.7711% and I posted 623 posts there.
And 623 / 80790 = 0.7711%
Thanks, I completely understand now. Cheers!