A little help with a math issue

I need to calculate a value and I found some difficulty to create the right equation.

I would like to know the percent of the precision of clicks.

I have the number of the player's clicks and the number of hits. I believe that's correct if I divide them and multiply by 100, including &"%" after, isn't? I tried to use "round" to eliminate decimal numbers, but I didn't get the correct value?

Other doubt: How can I do to prevent "NaN (if player doesn't click in the screen)?

Thanks in advance

If Click_No > 0

-- PrecisionVar = int(100 * Hit_No / Click_No) & "%"

The right way. Thank you, Colludium

Any time . Sometimes I have to leave my self-made problems for a day before I can return and try again.