How I can output the letter frequency

Question

You are making a program to analyze text.
Take the text as the first input and a letter as the second input, and output the frequency of that letter in the text as a whole percentage.

Sample Input:
hello
l

Sample Output:
40

Answer 1

tekst = 'aman'
lett = 'n'
print((tekst.count(lett)*100)/len(tekst))

Answer 2

Thanks