Your question is Monthly Variance Reporting Workflow. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Explain how you would prepare a monthly variance report in SQL for a finance reporting workflow. Focus on how you align actuals and budget, choose the reporting grain, calculate dollar and percentage variance, and handle missing or zero values in a month-end process.