There are many stats on the no. of starving people around the world. According to one report there are currently 1 BILLION people(that's about 1/6th of the worlds population that's malnourished.) The average person who eats 3 times(meals) a day, ends up eating 1095 times in a year(3x365).
People who usually tip at a restaurant, pay an average of 10-15% of the total bill.
Here are some interesting facts on how you could make a difference by setting apart a small amount for each meal that you have.
1.)10% of each meal =>By the end of the year you end up feeding
110 people/ or giving away 110 meals(0.10x3x365) Wow!
2) 5% of each meal =>By the end of the year you end up feeding
55 people/or giving away 55 meals(0.05x3x365)
3) 1meal per week=>By the end of the year you end up feeding
54 people/or giving away 54 meals(1x54)