Panda Express -- California.

There is no tax difference for here or to go in restaurants in California. The classic order to-go and eat here is Panda Express; This is because of the general belief that you get more food in the to-go container vs the eat here normal plate.

from wikipedia...California sales tax...
"Some food is taxed and some is exempt from tax. Restaurant bills are taxed, as is ready-to-eat hot food sold by supermarkets and similar vendors. As an exception, hot beverages and bakery items are tax-exempt if and only if they are for take-out and are not sold with any other hot food; if consumed on the seller's premises such items are taxed like restaurant meals. All other food is exempt from sales tax."