How do i calculate the returns?

C D F E Company B = Risk Free Rate (R) = 1.62 1.90% Retums B S&P 500 Closing Data Date Adjusted Close 12/1/2021 4824.27 11/1/2021 4663.70 10/1/2021 4659.78 9/1/2021 4533.15 8/1/2021 4461.86 7/1/2021 4427.74 6/1/2021 4466.71 5/1/2021 4475.23 4/1/2021 4490.09 3/1/2021 4386.53 2/1/2021 4403.36 1/1/2021 4337.92 12/1/2020 4265.58 11/1/2020 4170.18 10/1/2020 4167.76 9/1/2020 4195.08 8/1/2020 4143.03 7/1/2020 4165.22 6/1/2020 4177.67 S/1/2020 4161.86 8 4/1/2020 4075.78 3/1/2020 4122.23 1 4097.84