I Accidentally Ran Six Miles

My mom, my sisters Rachael, Francie, Lori and myself have made a bet with each other that could end up costing me a hundred bucks. Whoever looses the most weight in percentage by the 4th of July gets a hundred bucks from each of us. Adam must have a lot of faith in me, he keeps asking me what I'm going to do with all that money. Apparently he doesn't know me that well; granted we've only been married less than a year (I don't diet/exercise very consistently). Thankfully though, my lack of direction forced me to run longer than anticipated. I've lived here almost a year and I got lost less than 6 miles from my house. I knew the general direction that home was, but I couldn't find a street that would take me there. Every time I ran down a street, it dead ended or looped around. For you big athletes, six miles might not seem like a lot, but it is when you've only jogged up to 3 miles at a time, a couple of times a week, for only a few weeks in the past couple of years.
Along with my lack of directions, I'm math challenged. I had to try the numbers several ways and then confirm with Adam the correct way to calculate weight loss percentage. Here's what we came up with: [1-(new wt/old wt.)].
I'm not sure what my chances are, but now I'm curious, so I'm done here for now so that I can spend some time with Excel to figure that out. Hope everyone is doing good, because that is ultimately the goal; the money just makes it easier to get there.
Here's how I'm keeping track of everything: www.sparkpeople.com
If you check it out, make sure you block them in your email address, they like to send frequent reminders.