Yes, press CTRL+ESCAPE to stop a running macro. You might need to hold the keys for about a second.
Practical macro examples
If this is for an exam-style "Paper 2," follow the "9-marker" rule: Definition: macro easy by boss
: Represents one serving of complex carbohydrates. Thumb : Represents one serving of healthy fats. Step 3: Streamline Meal Prep Yes, press CTRL+ESCAPE to stop a running macro