Adwords Click, CTR% and Impr drop 70%, what is the reason?!

[neogeo]

One of my ad at Google adwords, the average daily click was about 280 clicks per day and the CTR% was about 25%, very stable and average since 6 months ago. But last few days, the clicks was drop to about 80, yesterday more worst, only 19 clicks and about 7% CTR%. Unbelievable!!! I check there if any new competitors, but no, I still in average first place and actually there was only my ad with this keyword. Can somebody tell me if there have any others reason?

Thanks and have a good day to everybody!

[abbottsys]

First, where were your clicks coming from? Were you getting clicks from both the Search and Content Networks? If so, was the drop the same across both networks?

[neogeo]

First, where were your clicks coming from? Were you getting clicks from both the Search and Content Networks? If so, was the drop the same across both networks?

Hi abbottsys, my clicks came from almost all countrys, I seperate to two campaign (Europe campaign and others country campaign), both of the campaign clicks were average and stable before but both of them drop now! Also I only used search network. Thanks.