Yeah I am definitely feeling like I should challenge the importance of this little "moogle encounter". All I know is, I missed it (her) at the beginning, but after Mt Gagazet I had as much % done as I'm supposed to have, giving that I'm doing all the other events required to get the 100%.
I did the yuna flashback/balloon mission, and that gave me some % too.
At the moment, I just finished talking to Maechen the first time and brought Clasko aboard the Celsius...I watched crimson sphere 9 (report 1) and then talked to Clasko, and this is where I noticed my first shortage in %...
According to the guide(s) I should have 13%. In my save file it says I have 12%...
So at the moment I am behind by 1....or most likely half of one...percent.