I honestly don’t know. If one of your scores is significantly lower than the rest then yes. For instance if you have a 50% for reading you need to retake. I think an 88% is solid. If you were nervous, or didn’t prepare then you might consider retaking. In the end I don’t really think an 88% is going to keep you out if the rest of your application is stellar. In general to feel confident in scores I’d recommend having the % be at or above the school’s average %.