Why is Android so high

What? 5% seems ok depending on what you were doing. If anything it's your screen that's eating your battery.
 
Looks completely normal. If it was "going crazy", it would be way above your screen battery drain. Mine is similar and always is on all my Android devices.
 
Yeah that's actually WAY better than Samsung phones in the past. On my s7 it would always be somewhere around 20%.