You can try out a ketogenic type of diet which is known to be a very effective way to lose body fat. On this kind of diet, you eat only food rich with proteins and fats, and low on carbohydrates (thus making it low in calories as well). It may sound confusing how taking more fats will help you reduce your body fat, but by eating the types of food mentioned, the body enters a state called ketosis where your main source of energy becomes fat. That way, all the fat that you eat is used as an energy source, as well as your body's own fat. Many body builders use this kind of diet to considerably lower their body fat. If you are interested in this type of diet (together with recipes to get you started right away), check out the link mentioned as the source.
Hope that helped,
wish you all the best.