Sales Forecast with recursive loop

@Patrick92 welcome to the KNIME forum

Like @Snowy said: it would be helpful if you could give us some more details.

Then. We had a somewhat similar discussion about the prediction of numeric targets (unemployment in the UK) here:

This resulted in a collection of workflows (please consider the whole workflow group):

Or this:

Then there is this collection about machine learning methods. In your case a regression model might be the right one. Or you might have to use something to predict based on time series (no collection for that, yet):

Often it does make sense to familiarise yourself with several methods and especially think about your business case and the data you have available and if what you want to find is somewhere in the data you have.