Warranty replacement is triggered at less than 70% of 'new' capacity. Plus, as has been said, the indication varies based on various conditions, and if you were to check it again tomorrow, it might show a different value. It might be possible to have one bad module, and that could be replaced, if necessary.
There's a reason why BMW doesn't advertise how to get into the service menus...interpreting them takes some training, and people can freak out for no reason if there's something there they don't understand in context.
2011 535i x-drive GT, 2014 i3 BEV