I have a strange issue please this out and let me know solution/suggestion I should try.
I am reading this excel file and I recognized that the comma in the excel are not being picked in Dateable.
When I check the excel file I found this issue suppose this is a excel file :-
a b c
123,00 12 1231
when extracting the a 123.00 value it is extracted as 12300 and in excel file itself this is not accepting this value as 123,00
You can try the solution shared by Lakshman, it should work.
In excel the cell formatting affects only the display of the number in the cell, not the actual value stored.
So, the actual value stored in your file is 200000 but because of formatting it showing as 200,000