Percentage of change calculation

Please see the attached image for reference.

I am trying to calculate the change in percentage between the 2 months. The formula work great in any other numbering situation except for when the 1st column is a 0 and the 2nd column has a number. In this situation it always returns an error. I tried different things to try to make it work but had no success, could someone help me to make this work for this scenario, while still keeping what they formula currently does.

Thanks. Please let me know if you have any questions.