Each week in the NFL is extremely important for those teams looking to make a run at the playoffs. Oftentimes, the difference between making the playoffs and not can be as slim as one win or loss. This is why a loss like the one the New England Patriots suffered at the hands of the Arizona Cardinals can be important.
The way the percentages work in each slide is based what division each team represents. For example, the NFC East got a 100 percentage points to distribute. So the Philadelphia Eagles 45 percent means they have the best chance to make the playoffs out of that division.