This past week would have been the deadline for first group of applicants who were accepted, which could yield some good news. Judging by the forum it seems like Mondays and Fridays are popular days for the acceptance emails to be sent out but I could be wrong.
I had a 78% average during my undergrad and 81% during my last two years. My EC's were decent but nothing spectacular: varsity athlete and some involvement with the school paper. I think what really helped was my experience profile because my summer job is mostly teaching junior golf camps which put me at about 3,500 hours and I was involved in minor hockey each year which gave me another 1,000.
I hope this helps, and that you get some good news soon!!