import re
from spellchecker import SpellChecker

# Pre-compile the regular expression
PERCENTAGE_PATTERN = re.compile(r'^\d+%?$')


def is_percentage_or_number(s):
    # re.match returns None if the string does not match the pattern
    return PERCENTAGE_PATTERN.match(s) is not None


def correct_spelling(text):
    words = text.split()

    corrected_words = []
    for word in words:
        if is_percentage_or_number(word):
            corrected_words.append(word)
        else:
            spell = SpellChecker()
            corrected_word = spell.correction(text)
            corrected_words.append(str(corrected_word))  # convert corrected word back to string

    corrected_text = ' '.join(corrected_words)
    return corrected_text