def _create_matrix_percent(file_name, indel_matrix, cov, indel):
    """converts raw count value in matrix 
    into percentage based on coverage value"""
    for ind in indel_matrix.index:
        for col in indel_matrix.columns:
            indel_matrix.loc[ind, col] = indel_matrix.loc[ind, col] / cov * 100
    return indel_matrix
