# How can I display a graph with different magnitudes?

I have the following set of data across 28 days. I want to show that the rate at which the data from group H decrease is greater than the one in group I, however since they have a different order of magnitude this is not easily displayed. Is there a way to transform my data in order to have them at the same magnitude, i.e. have the same starting values.

• Can you elaborate on "the rate at which the data from group H is greater than the one in group I". What do you mean by rate? – Arun Jose Oct 20 '16 at 10:58
• What I meant is the rate at which the values decrease. – Diego Corona Oct 20 '16 at 11:09

If you want them to all start at the same $y$ value then just subtract the appropriate constant from each curve to achieve that.