But the really big number is the percentage of rich alumni.
But note Jews make up less than 10% of undergrads at Harvard. Victor Davis Hanson says the goal is get the percentage of Jews at Harvard down to their percentage of the US population, around 2%. A few decades ago the percentage was over 20.
Grad schools at Harvard are more than half Jewish. Grad school in things like law and medicine are very expensive and still very competitive.
https://www.hillel.org/college/harvard-university/