Question: 寒武纪最近一个交易日的涨跌幅
Answer: 必答点：寒武纪的最新涨跌幅
精度要求：仅允许四舍五入误差
Time: 2025/8/14
Real-time data: {"688256___SH":{"RT_TIME":"153022","RT_PCT_CHG":"0.10350000000000001","RT_DATE":"20250814"}}