Update Rule “single-focus-number/rule” (#8376)

* Update Rule “single-focus-number/rule”

* Update Rule “single-focus-number/rule”

rules/single-focus-number/rule.md

@@ -1,25 +1,25 @@
 ---
 type: rule
-archivedreason:
 title: Do you have a single focus number for each report when possible?
-guid: ba6001fc-7384-4b6e-9af4-6044b4b92781
 uri: single-focus-number
-created: 2021-05-14T06:06:33.0000000Z
-authors: 
-- title: Ulysses Maclaren
-  url: https://ssw.com.au/people/ulysses-maclaren
-related:
-
+authors:
+  - title: Ulysses Maclaren
+    url: https://ssw.com.au/people/ulysses-maclaren
+related: null
+created: 2021-05-14T06:06:33.000Z
+archivedreason: null
+guid: ba6001fc-7384-4b6e-9af4-6044b4b92781
 ---
-
 Many reports are expanding on what could be expressed as a single number. When this is the case, make sure that number is clear and bold at the top right of the report.
 
 Ideally this should be a single number, not a group of numbers. If there is more than one, make sure one is chosen as the main one and put the others in a less prominent colour, size, or position.
 
+An even better option is to show this number as a KPI, which shows historical values for that number in the background, and potentially a target. this gives contextto whether the number you're seeing is a "good" or "bad".
+
 <!--endintro-->
 
-![Figure: One number at the top right sums up the whole report in a single number](report-single-number-1.jpg)
+![Figure: Good Example - One number at the top right sums up the whole report in a single number](outstanding-invoices.png)
 
-![Figure: Another good example](report-single-number-2.jpg)
+![Figure: Another good example](prepaid-credit.png)
 
-![Figure: and another](report-single-number-3.jpg)
+![Figure: OK Example - This one showsthe number without the KPI... styill useful but not quite as good](report-single-number-3.jpg)