I got feedback from a reviewer. It is really important for me to answer to this question. I would appreciate of any help.
it was mentioned that 1% of the data was used for training while 99% was used for testing. This is unusual and it calls for careful evaluation of the actual need for using ML tools for the problem. In short, if just 1% is sufficient to build a ML model, it may mean that the data is essentially trivial such that using ML may not be at all necessary. For this reason, it would be good for the authors to provide a rather strong justification for the motivation of this work
So, actually we went with 10 and 90 and got same result. We wanted to show that with less amount of training data we could provide good prediction. Any idea we could write that for 80 and 20 there is not much difference?