Comparing relative change for different base value

I need to compare change in employment size for a sample of companies. I could use percentage change, however, the problem with it is that when the base is small, a small absolute change result in a large percentage change.

For instance, company A and B employment is 10 and 10,000 respectively. assuming both company increase their employment by 5. the percentage increase is 50% for A and 0.05% for B.

I recall reading somewhere that there are some measures that take into account the different initial value when measuring changes (e.g., multiplying relative change by a function of absolute change). However, I can’t recall where I read it or the name of the indicator.

Anyone is aware of such indicator or is able to propose a solution?

TIA