You should always be striving to achieve a higher CTR. A 2% CTR is good, but continually improving this metric will make your account great.

What is a good average CTR?

The CTR Equation

Basically, it's the percentage of people who view your ad (impressions) divided by the ones who click your ad (clicks). As far as what constitutes a good click through rate, the average is around 1.91% for search and 0.35% for display.

Is a 10% CTR good?

In either case, a CTR between 10% and 20% is considered desirable. However, highly targeted emails (personalized messages, behavior-based campaigns, etc.) can often attain click-through rates above 20%. Whatever type of campaign you're managing, remember to track your progress.