Took a while; some folks I know take 6 months to lose that much. 60% is diet....mix with cardio and exercise heavy/large muscle groups; just about anyone can do.
I Helped my college buddy, who is 45 lose 60 pounds in one year. All he did was go 4-5 times a week to the gym with me and we squatted, worked on his back, chest and shoulders. End it with 20 minutes of heavy cardio and BOOM, lost 60 pounds.
it aint rocket surgery.
Mix in 5-6 small meals; either protein shakes or heavy protein/low fat foods like chicken, fish and some amino acids. Folks did not recognize him 9 months in.
Meanwhile we're watching idiots doing targeted exercises like cross-over cable curls and get zero results. You need to build mass first; get the large muscle groups going, that raises metabolism, stick to heavy basic stuff -- like squats, shoulder presses, etc etc and watch your diet folks.
aint no shortcuts in losing weight; even going on stupid diets (without exercise) will fail eventually.