By then, the Dow was about ninety percent below ...

问题描述:

By then, the Dow was about ninety percent below ...
By then, the Dow was about ninety percent below its high reached in September of nineteen twenty-nine.
请问这句话的意思是不是说那时,道琼斯指数比1929年9月低90%?

到那时,道琼斯指数约百分之九十低于其在1929年9月