It’s probably because of the excel file. You can either change the data format after this process is completed. (alternative: you can also add a ’ before the text when it writes in the cell.)
It is taking time because of its’ dynamic process. It opens and reads the excel file each time, searches the table to get the amount of the particular APPLAN. If we could fix the DataTables; as done in the previous workflow; the process would have been way faster.