1. **State the problem:** A stock price dropped from 202 to 74 between July 12 and July 31. We need to find how much value it lost. 2. **Formula used:** The loss in value is calculated by subtracting the final price from the initial price: $$\text{Loss} = \text{Initial Price} - \text{Final Price}$$ 3. **Apply the values:** $$\text{Loss} = 202 - 74$$ 4. **Calculate the difference:** $$\text{Loss} = 128$$ 5. **Interpretation:** The stock lost 128 in value from July 12 to July 31. **Final answer:** 128