Python attendance percentage calculator using do while loop

The aim is to create a percentage attendace calculator based on a given list of names. I was able to loop the input questions with the names in the list. However my issues lie with the following if condition which should output a 1 for each input question if the answer is y for each person in the list or a 0 if the answer n for any person in the list. The number outputs should then be added in order to obtain a precentage. Please help.

continueLooping=True

students=["Annie", "Brian", "Clare", "Danny", "Ellen"]

i=0

while i<len(students):
    askuser=input(f"Is {students[i]} present?[y/n]")
    i=i+1

    if askuser == "y":
        one = 1
        print("1")

    else:
        one = -1
        print("-1")

        while one<len(students):
            if askuser == "y":
               one = 1
                one=one+1
            else:
                one = -1
                one=one+1

percentage=(one)/len(students)
print(percentage)