Unfortunately there is not enough info in the stats the UCs release to know. 75th percentile just says that 3/4 of admits had that gpa or less; its still possible at a school like Cal that they only took 50% or less of the kids with that gpa. What is really needed is a chart like the med schools give at https://www.aamc.org/data/facts/applicantmatriculant/157998/factstablea24.html