statistically compare two rates

-The previous thread was difficult to read-
I am currently working on a project and have calculated two injury rates. I am looking to get a p-value (statistical significance) comparing the two rates. Is this possible, if so what type of statistical test should I use?

Any help is greatly appreciated.

group 1
8 total injuries
211,110 total hours exposed
0.038/1,000hrs rate

group 2
12 total injuries
27,951 total hours exposed
0.43/1,000hrs rate