pipelian 0 Newbie Poster

I have a datagridview (unbound) that i want to calculate percentages based in a total. I already done the total (in a label.text). So what i want for the second column is to find out the percentage for each quantity that varies every time i enter a new quantity value.

(This is my datagrid view)
qty %_OF_Content
10 8.130
20 16.260
30 24.390
50 40.65
13 10.569
Total: 123

Please i honestly need help.
Thsnk in advance:sad:

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