How to Resize an assemble.

I am having troubles with an assemble part I downloaded. Its the right part but its just too large to fit with the others correctly. I was wondering how you can make this part smaller all at once. It has many edges, complex cuts and curves.

What software are you using? What part is it?

I am using autodesk inventor.

Was it a native Inventor ipt part?

If not, if it was a STEP or IGES or some other format what were the Units set to in the Options before opening?

You can always scale by starting a new file, exit sketch, on the Manage tab select Derived Component and select the original file to derive. Set the desired Scale for deriving.