Hi everyone ![]()
I’m building a dashboard in Looker Studio combining multiple data sources: Google Analytics, Google Ads, and a Google Sheets file. The report shows KPIs from paid marketing campaigns across several countries, so I’m using country filters to separate the data.
In one of the country-specific views, management asked me to calculate a percentage comparison between a metric from Google Ads and another from Google Sheets. Both metrics are filtered by country. For example:
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From Google Ads, I want to use the number of conversions (filtered by country).
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From Google Sheets, I want to use the number of reported leads (also filtered by the same country).
The goal is to calculate something like this:
% Performance = (Reported Leads from Google Sheets / Conversions from Google Ads) * 100
The issue:
I haven’t found a way to combine these two metrics across sources into a single formula. Looker Studio treats them separately, and even with filters applied, I can’t create a calculated field that pulls in values from both sources.
Has anyone successfully done something like this? Is there a workaround or method to calculate percentages between metrics from different sources, with filters applied?
Any help or ideas would be greatly appreciated!