How can i calculate openrate and click rate % and match with Dashboard of klaviyo

Currently I am getting metric data from following API
https://a.klaviyo.com/api/v1/metrics?api_key=”Key”

Getting campaigns data from Following api
https://a.klaviyo.com/api/v1/campaigns?api_key=”Key”

What should i do now
I mean how should i get number of deliver email and number of click email
I am little confuse for passing metric ID to the following API
https://a.klaviyo.com/api/v1/metric/${Metics_ID}/export?api_key=”KEY&unit=day&measurement=count&start_date=2022-04-031&end_date=2022-04-03&where=[["$message","=","${Camp_ID}"]]


Formula -  total number of deliverable / click emails*100    RIght?
How can i export data for particular day ?
How can i calculate open rate, click rate and place order for the given date range which should match with dashboard?
I am confuse how should i proceed.
Can you please help me