0.01 %

You're giving your best, and you're working hard, you start getting tired, and would like some time off, but still you haven't reached your 0 % , still there's that small part of you that wants to work.
you're tired, you need to rest, you have to rest to recharge to your full capacity, but it's that small percent that makes you still go on, not as hard, not recharged, but somehow moving on.
you're thinking: " Do I need to reach that level?" well the point is, whenever there's still a part in you that still have even a femto-amount of energy, it won't let you rest, you're still gonna work, you'll find out that you're still working.