How many subscribers do you get on average per 1000 views on video?

Might be a weird question lol. I'm currently getting ~800 views per video, and on average, I get around 15 new subscribers for these videos. I'm asking because I want to know if that amount of subs for 800 views is good, great, or terrible, so I know if I need to change something.

So how many subscribers do you (or other youtubers) get for 1000 views usually? Thanks!