How many churches need to fundraise to meet their budget? Is fundraising half of what you need? Less? More?

When I  was appointed at a large downtown church, there was no fundraising per se. They spent money like drunken sailers and there always seemed to be lots ( May have been a fallacy). Now that same church depends on fundraising and rentals to meet the budget.

The thing that I see missing in their  budget now is ministry. Most of  their volunteer hours are used in fundraising. They are wearing the congregation down.