We both work full time, 2 kids
She does most of the house cleaning—dust, vacuum, bathrooms, etc.—But I'll jump in on changing sheets, folding, etc.
I do the outside—mow, most of the yard upkeep, garbage—but we both will plant, spread mulch, etc.
We split on things like shopping, errands, dropping off/picking up kids based on who is where.
i.e. yesterday, she was prepping meals for the week, so I ran out to do the grocery shopping. This time of year, she works on Saturdays, so I'll pick up more of the responsibility for the next few weeks. But on her way home she may jump off and do the grocery shopping because she is 'already out'.
Can't really put a % on it b/c we try and keep it kind of fluid.
Summer time she is off, so she will do a bit more during the week so our weekends get freed up. She well even mow from time to time if we have a busy weekend coming up. Overall, I think we have a pretty good system of not worrying about "who's job is who's"