Say we have this data in a column:

75
46
59
75
32
62
98
14
46
68
49
92
22
28
49
61
40
3
8
21

first copy the column to column B and sort it descending

In C1 enter:
=B1/SUM(B:B)

In C2 enter:
=SUM($B$1:B2)/SUM(B:B) and copy down.

We now see:

75 98 10.34%
46 92 20.04%
59 75 27.95%
75 75 35.86%
32 68 43.04%
62 62 49.58%
98 61 56.01%
14 59 62.24%
46 49 67.41%
68 49 72.57%
49 46 77.43%
92 46 82.28%
22 40 86.50%
28 32 89.87%
49 28 92.83%
61 22 95.15%
40 21 97.36%
3 14 98.84%
8 8 99.68%
21 3 100.00%

It is easy to see that the top 20% is the first two items. They account for
20% of the total.



--
Gary''s Student - gsnu200829


"wjs81866" wrote:

I can't remember the formula to find the top 20% of the dollars spent in a
column.

I have 692 rows with dollar amounts I need to report the % (rank) compared
to everything else in the column.