What is the formula to calculate the net present value, internal rate of return, and payback values for three years if an investment was made for 25 million dollars at 4.75 percent discount rate. How would the formula change for a 20 percent increase and a 20 percent decrease?

Projected Total Revenue: 2020 is $15,198 2021 is $15,912 2022 is $16,310

Projected Gross Profit: 2020 is $5,475 2021 is $5,732 2022 is $5,875

Formula change for 20 percent increase

Projected Total Revenue: 2020 is $16,300 2021 is $17,115 2022 is $18,827

Projected Gross Profit: 2020 is $5,872 2021 is $6,165 2022 is $6,782

Formula change for 20 percent decrease

Projected Total Revenue: 2020 is $13,972 2021 is $13,133 2022 is $12,608

Projected Gross Profit: 2020 is $5,033 2021 is $4,731 2022 is $4,542