On the left side of your Start page under Step 1, you should see "Track Weight" and an "edit goals" button under it. You can change your weight loss goal there.
Hope that helps,
"You may have a fresh start any moment you choose, for this thing that we call "failure" is not the falling down but the staying down." Mary Pickford
"No matter how slow you go, you are still lapping everybody on the couch."