Since your BMI is just over 25, you fall in the category of overweight.
And you need to lose only about 4-5 kilos.
Follow a diet consisting of high protein, low carbohydrate, low fat and high fiber.
Avoid foods which have a high glycemic index.
Let a major portion of your diet consist of fruits and vegetables.
Do cardio workout like running, jogging, dancing, jumping jacks, sports like badminton etc what ever that keeps your heart rate in the range of 140-150 beats per minute.
You can have 1 cup of green tea twice a day.
Drink lots of water.
Have less calories than required daily and burn more calories than you take in.
Hope this helps.