How to calculate the rating for "for" and "against"?

Question

Content

There are positions on the site. Users can vote "for" and "against". Based on the ratings, you need to make a rating - i.e. each position must have a number, the numbers are already lined up on a scale from smallest to largest.
When calculating the rating, you can use:
X - The number of users on the site who can vote on the rating (for example, 300).
S - Number of total votes (sum of votes "for" + "against")
K - User activity coefficient - K = S/X *100 (you can not use this parameter)
Z - Number of positive ratings (for)
P - Number of negative ratings (against)
VIP status (for the position) +10 points to the rating
We need to come up with a formula so that the ratings are different and sensibly calculated. Not all of the options listed above can be used.

Answer 1

Just come up with a max sum for all points and add them up for example: (1-(P*100/Z)/100)*1000
(1000 - max sum for Z and P if Z and P are equal get 0 if P is less than get. pos. cut)