A Body fat tester is a device you can use clamp on various parts of your body and its comes with charts to help to calculate body fat
Throw away the scale! It doesn't help because when you're trying to lose fat, you may be gaining muscle; so the numbers could be the same or higher. Pay attention to the way you want your body to look not the numbers.
As you say ur eathing healthy. But eating healthy doesnt mean losing fat. It just means you are eating more healthy.
To consistantly lose fat you have to be on a energy (calorie) deflict over a longer period of time. This will make sure the body uses its own energy sources instead of what it breaks down from food intake.
Its alot of times adviced to do weighttraining next to this. Because the body will use the energy saved in our muscles. And when not comsuming enough protein and not weighttraining we will also lose our dear muscle mass next to our fat.
This is the most simple explenation of what you have to look into some more!
What does your diet and workout plan look like? I agree with the post about hiit. We cut out our cardio and did just high intensity and I lost 20lbs and my workout partner lost 60. (he was a lot heavier than me) also, how long have you been doing the same workout/diet? Plateaus hit frequently and are hard to bust through. The littlest changes in your routine can make the biggest difference in progress. Just some food for thought.