Add (config option) to show percent filter represents of the base collection

[marks]

For example, in the screenshot below, 23.07% is calculated by taking the filtered amount and dividing by total amount

• [x] bar
• [ ] pie
• [x] datetime

[marks]

@timwis - curious on your opinion if this should be on by default or not. I vote on by default personally.

[marks]

Looks like the same code would be used for both bar and datetime and almost the same for pie

[timwis]

:+1: for default. Can't think of a scenario where it wouldn't be relevant.