To solve this expression, we need to follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).

First, let's solve what's inside the parentheses:
100 × 2 = 200

Now, let's solve the multiplication:
15 - 25 × 8 ÷ 200

Next, let's solve the division:
15 - 25 × 0.04

Now, let's solve the multiplication:
15 - 1

Finally, let's solve the subtraction:
14

Therefore, 15 - 25 × 8 ÷ (100 × 2) equals 14.