change in gross margin (positive number for increase, negative fir decrease?

Cafe X is selling coffee in three diflerent sizes at the prices and costs shown in the first table below. As shown in tho second table, they are considering raising the price of their small to $2.75, and they project that sales of smals wul go down whie sales of mediums and tames will go up slightly. Fill out the tables below to caiculate the projocted change in gross margin based on the estimated changes in cups sold. You may find it hepfur to use a spreadsheet for the calculations