Click-through rate (CTR)
Click-through rate, abbreviated CTR, is a measure of how many people who view a social post, ad, or other piece of content click through to read more, buy, or take some other action.
It’s a useful metric because it measures how effectively your social content drives people to your owned web properties. The formula to calculate CTR is number of clicks divided by total impressions. CTR is usually expressed as a percentage.