From the sounds of things you may just be struggling with a bad connection. The queue thing means that one task is only going to start after the first is completed. Which, yes, does mean that the 77% figure has to go all the way to 100% and then you should be able to play the game. Hopefully fifa 15 will, similarly, be playable once the various downloads and installations are completed. It's just a matter of time rather than a problem.
Hopefully that explains the issue. Long story short, XboxOne (and, perhaps, all similar consoles like the PLaystationFour) aren't "plug and play" consoles and are more tailored for online multiplayer -- which can require a lot of downloading, installing updates, and just generally getting on your nerves how slow it all is. Hopefully the graphics are worth it though.