Click Through Rate (CTR) is a metric that measures how often people who see your ad end up clicking on it. In other words, it’s measuring your ad’s effectiveness at getting people to click on it.
Factors that influence your CTR:
One of the most important components of a high-CTR ad is a solid and compelling headline/offer.
Make sure your ads are eye-catching and relevant to what you’re advertising. It can make all the difference in whether or not people click through.
Clicks ÷ Impressions = CTR