If someone could explain to me how to do it in Excel please:

In the batch extraction of an enzyme from S$.$ cerevisiae, a high$-$speed $4$L capacity bead mill was used. Calculate the kinetic release constants of proteins $($R$)$ and enzyme $($A$)$ with the following obtained results and establish the times at which $80\%$ and $90\%$ of the enzyme are released, as well as the specific activity at that moment.