You can do it in 2 ways:
1. Have an additional blank row in the data itself and then manipulate it to show what you want.
For example: I have created a similar output using the Superstore data.
2. Create 2 separate worksheets, one for the 2 months data, and the second for the difference/variance and place them both on a dashboard one above the other.
Profit Computed.twbx 1.2 MB