The video tutorial guides viewers through solving a real-world scenario involving calculating the percentage difference in average sales compared to the previous month. It begins with setting up a table for visualization, calculating average sales, and creating a measure using variables in Power BI. The tutorial emphasizes using the divide function to avoid errors and concludes with testing the formula to ensure accuracy.

What was the specific question posed by the customer regarding sales?

Describe the process of creating a formula to calculate the percentage difference in average sales.

What visual representation did the teacher initially choose to help with the calculations?

Explain how to calculate the average sales for each month based on the provided data.

What is the significance of using the 'calculate' function in the context of this sales analysis?

How does the teacher suggest handling divide by zero errors in calculations?

What was the final outcome of the average sales comparison measure created by the teacher?