Dear all,
As you can see in the picture below I have for each number # or row a set of data from Jan to Sep. These values I calculated then by taking the values of the same month in 2020 minus the value of the same month in 2019 divide by the value in 2019 *100%. For example Jan= [Jan2020-Jan2019/Jan2019]*100% . So in this way I can see how much it's increased or decreased as compared to 2019. Now what I'm looking for is to predict the values of October, November and December based on the existence values. How can I do that? 