Question: The latest trading day's price change in dollars of AT&T (US stocks).（based on the latest closing price and the previous closing price）
Answer (English): Required Content: The latest price change in dollars of AT&T
Accuracy Requirements: Only rounding errors are allowed
Date: 2025/8/14
Reference data: {"T___N":{"RT_TIME":"195930","RT_DATE":"20250813","RT_CHG":"-0.08"}}