def analyze_text(text):
    letter_count = 0
    alphas = 0
    for c in text:
        if c == "e" or c == "E":
            letter_count += 1
        if c.isalpha():
            alphas += 1


    ans1 = "The text contains {0} alphabetic characters, of which {1} ({2}%) are 'e'."
    return ans1.format(alphas, letter_count, float(letter_count / alphas * 100))