我有一个Excel工作表，我从工作表中提取了一些值。但从文件工作表中提取的一些数字看起来像：

3767.3999999999996

它必须是：3767，39，逗号后面加两位小数.
我尝试使用此功能：

import openpyxl

def load_excel_file(self, file_name):
        excelWorkbook = openpyxl.load_workbook(filename=file_name, data_only=True)
        return excelWorkbook

def calulate_total_fruit_NorthMidSouth(self, file_name):

        # self.excelWorkbook
        sheet_factuur = self.load_excel_file(file_name)["Facturen "]

        fruit_sums = {
            "ananas": 0,
            "apple": 0,
            "waspeen": 0,
        }

        fruit_name_rows = {
            "ananas": [6, 7, 8],
            "apple": [9, 10, 11],
            "waspeen": [12, 13, 14],
        }
        array = [row for row in sheet_factuur.values]  # type: ignore

        # excel does not have a row 0
        for row_num, row_values in enumerate(array, 1):
            for fruit in ["ananas", "apple", "waspeen"]:  # loop through specific fruits
                if row_num in fruit_name_rows[fruit]:
                    # index 4 is column 5 in excel
                    fruit_sums[fruit] += row_values[4]  # type: ignore

        return "\n".join(f"{a} {b}" for a, b in "{:.2%}".format(fruit_sums.items()))

我尝试格式化return语句，但得到以下错误：

TypeError at /controlepunt
unsupported format string passed to dict_items.__format__

问题：如何正确格式化，使逗号后只有两个标记？