Heya ... welcome. And congrats on the weight loss.
I can relate to your frustration becuase I'm in the exact same place as you.

I lost 60ish pounds really easily and then when I hit 180, I slowed to a crawl. It's taken me 5 more months to lose the next 20 lbs to get to where I am now.
There are a lot of us on the boards who joke about the 170s and 160s being a "Bermuda Triangle" of weight loss - and you just have to struggle through it. While that sounds silly, there are enough of us who stalled there, that it might be something for you to consider.
Also there are a lot of us who feel that after losing a large chunk of weight, your body needs to take a break from losing and sort of hold at a "set point" for a little bit before starting to lose again. Some people are lucky and just lose steadily all the way to goal, but many of us had some adjustment periods in the middle there.
For other thingss:
Jay is right that it's possible that you're eating more calories than you think you are, so tracking can be key. I know that when I bought a food scale and started weighing my food, it was a huge eye opener. I was eating nearly 200 calories a day more than I thought I was when I was just measuring. It's easy to overmeasure a T of peanut butter or to badly eyeball 4 oz of meat.
Another thing is that your body could have gotten used to the exercise and calories you're putting into it and you just need to shake things up a bit. Change your calories, change your exercise, mix things up.
A lot of us broke a stall or a slow period by either adding weightlifting or HIIT (high intensity interval training) to our workouts. Search the Exercise forum and you'll get lots of great info on both of those things.
Good luck to you!
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