yes,
it should be easy to see if businesses are decreasing or increasing in cali.
I am pretty sure its a mixed trend, less headquarters do to taxes more new businesses then ever and more small businesses then any other state if I am not mistaken.
CA is the most populated state in the country, it makes sense we have "more" of everything. More businesses opening, more closing, more moving to other states. That's not rocket science, it's simple math. The question is why? The answer is democrat policies. It's why more than 50% of businesses leaving CA end up in Texas and somewhere around 10% end up in Florida, both red states if you didn't know.
I skimmed this article and it looks to touch on most of what's happening with businesses in CA. Keep in mind, this is just for the state, your county and city will also have their hands out for regulation fees and taxes.
https://californiapolicycenter.org/reports/worsttobest/