Which of the following is the correct sentence (maybe they are both correct):
Attacks are down as much as 10 percent.
Attacks are down by as much as 10 percent.
Learn English – The grammar of “by as much” and “as much”
phrases
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Best Answer
Anyway, the word decreased or fell is more common to use then down to show the decreasing amount of something.
Grammatically, the best sentence to write is the second one.
If you didn't use by in there, it would slightly state that "something called
attackdecreased something else calledas much as 10 percent. Just like this:The same thing implies to those sentence too (let's remove the
as much asto make it more understandable):Still, it's the grammar rule that I'm talking about. Sometimes people omit the by.