Finished Halo 4 On Legendary Still Says I'm 87%

Games Halo: The Master Chief Collection
1

So I just finished all the missions for Halo 4, yet the trophy “The Legend Of 117” still says 87%. Help??

2

> 2535471312439128;1:
> So I just finished all the missions for Halo 4, yet the trophy “The Legend Of 117” still says 87%. Help??

You have the achievement unlocked.