I'm no professional but I usually just read this and basically I've lost roughly 20kg in the past 2-3 months. In summer I was very sick and I put on a lot of weight as I was in hospital, no idea how but I gained weight from myself being 77kg at roughly 14% BF (183cm) to 107kg. I never knew that I had to make such a quick change to my life so all I done really was cut out of juices (only drink water and green tea), do weight training every second day (squats, anything really personally) and done cardio.
I've cut out all suger and other junk food substances and weight roughly 1200-1400 calories a day. This is just for myself personally of whats going on. Right now I'm at 87kg and I need to cut down to 83kg to make sure I can be in the normal BMI range again. Yet again, this is just for myself lol