Need help in Splunk Pie chart search expression

I am new to splunk dashboard development, so far I am creating KPI's using just 'single value'.

I have three KPI's resulted 600, 250, 150

KPI 1 search expression - Result is 600 (example)

index=indexname kubernetes.container_name=tpt
MESSAGE = "Code request"
| spath output=message path=MESSAGE 
| table _time message
| stats count as count1

KPI 2 search expression - Result is 250 (example)

index=indexname kubernetes.container_name=rsv
MESSAGE = "pin in email"
| spath output=message path=MESSAGE 
| table _time message
| stats count as count2

KPI 3 search expression - Result is 150 (example)

index=indexname kubernetes.container_name=rsv
MESSAGE = "pin in sms"
| spath output=message path=MESSAGE
| table _time message
| stats count as count3

I have shown above KPI's as numbers in the dashboard. However I would like show a pie chart with 60%, 25% and 15% share for above numbers. What would be search expression to create this chart?

You could achieve it by making it as a single query, extracting the fields and appending it using splunk append, below is the queries

index=indexname kubernetes.container_name=tpt MESSAGE = "*Code request*" 
| spath output=msg path=MESSAGE 
| eval counts=case((msg="Code request" ,"count1",msg="pin in email" ,"count2",msg="pin in sms" ,"count3")
| stats count by counts 
| append [search index=indexname kubernetes.container_name=rsv MESSAGE = "*pin in email*" 
| spath output=msg path=MESSAGE 
| eval counts=case((msg="Code request" ,"count1",msg="pin in email" ,"count2",msg="pin in sms" ,"count3")
| stats count by counts 
| append [search index=indexname kubernetes.container_name=rsv MESSAGE = "*pin in sms*" 
| spath output=msg path=MESSAGE 
| eval counts=case((msg="Code request" ,"count1",msg="pin in email" ,"count2",msg="pin in sms" ,"count3")
| stats count by counts ]]