Peugeot 306 1.8 16v

hello good! I wanted to consult whether anyone has an idea or record that what happened to me is.
I commit them: I make the clutch change to a peungoot 306 and when I finished assembling connect the battery, I gave contact and the dashboard needles rose progressively to the bottom, and that is not the worst, besides that the accounting had 100,000 km more ...... !!!!!!!!!!!!!
And to complete it, I went out to try the clutch and the kilometer account multiplied x 100, that is, for each KM brand 100km.
Does anyone have an idea of ​​because this can happen ???????
thank you.