Please help me understand how to do COSTCOs Pro-Forma Financial Statements (I/S, B/S, and Statement of Cash Flows) with deltas out 3 years and analysis. Each year must have 2 columns: 1 with the strategy and 1 without.

I have to include Pro-Forma ratios for the first year out with deltas contrasting from the most current year's ratios.

This part of the assignment is confusing me and I just need help getting the idea of how to do it.