How to best remove the registration sticker from the front windshield?

How can I best remove the registration sticker from the front windshield?  I need to take off the 2018 and put on the 2019, but I dont know the best way to remove the old sticker.

I hold a warm wet cloth over the sticker for a about 30 seconds and then use a razor blade to remove.

Single edge razor and maybe some goobegone