Since Potatoes are pretty starchy the carbs in potatoes would be classified as bad carbs.
But even though those carbs contained in potatoes are known as bad carbs the bad carbs are actually healthy for you.
Potatoes are a very healthy food to eat and is one of the many vegetables that you should eat to stay healthy.
If you're trying to lose weight though and want to eat potatoes then just avoid adding too much butter or any butter at all and get plenty of exercise to burn off the calories and you'll be just fine.