@dcurry -
I did a quick look in the areas where I thought it might be possible to set that type of action. I could not find anything. The only thing I know for sure is that I believe is for regular assignment assignments that if you select display grades as percent, that stays active for all future assignments created. With all other graded work, I believe you would have to change the view for each assignment to percentages.
Is this for your own viewing in the gradebook? Or is it the way you want it to show for students?
I checked and if you have the score set to display as percents on an assignment, then the students see the percent score and the max value in points for the assignment. Furthermore in your gradebook, you have to enter the score as a percent and not a point total.
I am not sure if there is a setting that will stick with new quizzes, and I do not believe there is one for classic.