How to duplicate calculated fields while replacing the field from which they calculate in Tableau

Question

I want to be able to take this calculated field (don't worry about the actual field)

COUNTD(IF [John Doe] THEN [response_id] END)/COUNTD([response_id])

and create like 100 more calculated fields but [John Doe] will be replaced with the name of a different field. I'd like to do this in an automated way so that I don't have to manually create every single calculated field.