Comparing between different groups of clusters after network clustering

Question

[The Last Word]

I have a set of eight gene clusters which I obtained from clustering a network. However, I had to update the genes in the network at a later stage which lead to certain deletions (genes not present in the new gene list). I did the clustering again and this time there were a total of 9 clusters. Is there some way in which I could compare the earlier eight clusters with the new nine ones to effectively say that "clustering has happened along the same lines". It would have been easier to do an eight to eight comparison checking from the largest to the smallest cluster. However, since I have nine clusters now, I am kinda in a fix as how to compare.

I used the same clustering algorithm to cluster the network in both the cases.