From your picture, you look to be around 25% body fat, maybe a scant bit higher. Far better than the average American, but still pretty high. You are 187 pounds, so doing the math (if we assume 25% body fat):
187 X 0.25 = 46.75 lbs of fat
187 - 46.76 = 140.25 lbs lean body mass
140.25 / 2.2 = 63.75 kg lean body mass
370 + (21.6 X 63.75) = 370 + 1377 = 1747
Only you can say how hard you are working, but for the example I will assume Moderate Activity (5 days a week of exercise but a sedentary job). This would give you:
1747 X 1.55 = 2707 calories. Make it 2700 for ease of remembering. This is how many calories you need each day to stay exactly as you are now.
It is recommended that you only drop your caloric intake by 500 calories below TDEE. This is for two main reasons. First, you will simply be too hungry and your odds of cheating are so high you are creating a situation where failure is likely. Do not put yourself in that position if possible. Second is that you want to lose weight slowly. This, also, is for two main reasons. First is that the body hates change - it wants to remain as it is and will fight you over it. A slow change is far easier for the body to accept and it will fight you less. Second is that if you lose weight too quickly you will end up with a bunch of loose skin around your belly. The only way to remove that is by surgery, which will leave a scar. If you lose the weight slowly, the skin has time to shrink itself and stay tight...and therefor actually look good when you are done.
So start with a 500 cal deficit for two weeks. At the end of two weeks you might find you are no longer losing weight. If so, redo the TDEE and find your new number and adjust from there. After another two weeks, instead of reducing your food intake, add more cardio. Do 20 minutes at 165bps to lose fat.
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I was doing that while you posted.