The next thing to look at, what are the goals of the client? Many clients like personal trainers simply to help them work out, no specific goals but general overall fitness. For these clients, percentages are probably unnecessary as you as the trainer can monitor their intensity and effort by watching. If it is an athlete preparing for their sports, intensities will give you a great guideline to go by and allow you to accurately pick a weight for their work sets that will increase their potential for strength.
What you want to do is make a separate spreadsheet for each of those categories that I mentioned earlier. Start out by making one for the affiliate programs that you have joined. Label the top left cell ‘Affiliate Name‘. Now you have a choice. In my spreadsheet program, I can right click on that cell and add a hyperlink. If you can do that, I recommend that you make a hyperlink to the place you can look at your stats. If you can‘t do that with your program name the next column ‘stats‘.