We use SEO tools and craft a keyword strategy. Then we calculate the total amount of monthly leads/sales and cost-per-lead/sale using the formula on this post.
If you're already achieving 3%, 5% or even 10% conversion rates, is that as high as you're going to go?
Conversion Actions - To be able to track a conversion, we would need a "trigger" for that conversion action.
Testing & Double Checking Existing Setups...
It's possible the impression share loss due to rank includes losing out on impressions that the campaign is eligible for but are very broad so you would not want to show for them anyway.
If you've ever wondered why Google Ads doesn't show the same conversion as Google Analytics, read this.