Subject + 跌 + 至/到 + Amount
The verb 跌 (diē) means "to fall" or "to drop" and is used to describe a decline in numerical value, such as prices or exchange rates. It is often followed by 至 (zhì, "to") or 到 (dào, "to") to indicate the level something has fallen to.
房价跌了不少,很多人开始观望。
Fángjià diē le bù shǎo, hěn duō rén kāishǐ guānwàng.
Housing prices have dropped quite a bit, and many people are starting to wait and see.
这只股票一天之内跌了百分之十。
Zhè zhī gǔpiào yì tiān zhī nèi diē le bǎi fēn zhī shí.
This stock fell by ten percent in a single day.
油价跌到了近五年的最低点。
Yóujià diē dào le jìn wǔ nián de zuì dī diǎn.
Oil prices have fallen to their lowest point in nearly five years.