Col. Boozy BadgerYou take 10% of the bill amount, because that’s easy, and you double it. Problem solved.
Back when it was 15% is normal, 10% of the bill, half the 10%, then add those numbers together.
You’re welcome, CNN.
Sakkano 
🐁@BoozyBadger i have funny rules about tipping. With delivery drivers and servers if 10% it's lower than base minimum wage, then I will tip at wage. Even if there was shitty service. After all, maybe they were having a bad day, or the problem was beyond their control.
The end result is that drivers and servers actually look forward to my regular patronage. The Papa Johns's drivers especially let me know this.