def compute_classification_accuracy(correctly_classified, incorrectly_classified):
    """
    Computes the accuracy of the model based on the number of correctly and incorrectly classified points.
    Expresses accuracy as a percentage value.

    :param correctly_classified: count of correctly classified data points
    :param incorrectly_classified: count of incorrectly classified data points
    :return: accuracy score
    """
    accuracy = (correctly_classified / (correctly_classified + incorrectly_classified)) * 100
    return accuracy