The recipe is originally intended for 100 servings. You want to make only 25 servings, which is 1/4 of the original recipe (100÷25=4). Divide each ingredient by 4 to get the amount you'll need for 25 servings.
1.) 100 ÷ 4 = 25 baking apples
2.) 72 ÷ 4 = 18 tbsp of sugar
3.) 14 ÷ 4 = 3.5 cups of flour
4.) 6 ÷ 4 = 1.5 tsp of baking powder
5.) 24 ÷ 4 = 6 eggs
6.) 80 ÷ 4 = 20 tbsp butter
7.) 50 ÷ 4 = 12.5 tbsp of chopped walnuts