Which metric measures the percentage of people who take a desired action after being exposed to a campaign? By vmartinez Which metric measures the percentage of people who take a desired action after being exposed to a campaign? ROI. Bounce rate. Conversion rate. Reach. Related content Related questions:A client in the software industry wants to…A brand is worried about whether people remember…Imagine you’re a marketing assistant at a big…A food brand wants to run a campaign using video…