It is simple math. Divide the amount of likes by the amount of posts. In Fullcourts case above, for every post he gets .181 likes, or, in other words, 18% of his posts get a "like."
Son, look back at the Original Post... "Could one of you nerds on here break down the ratio between likes and posts?"
Going to WAR Did I mention that Altuve entered Game 159 of 162 with career highs in batting average (.350), OPS (.970), OBP (.415), runs (111) and slugging percentage (.555)? Or that the 27-year-old from Venezuela - who is 5-6, 165 pounds and was never supposed to even make the majors - leads MLB in WAR (8.5), tops the AL in hits (204) and is batting a league-best .448 in clutch situations?
It's more complicated than just taking the ratio. Us oldsters around here didn't have likes for the first many years of our posts. We got these green penis things back in the day. All that credit was lost, FWIW.