Packaging Process in InDesign is altering font size

I have packaged an indesign file numerous times with the same result every time with no clue as to why. Before the packaging process, my text formatting is correct, but when I package the file, the pdf, idml and indesign files generated in the packaged file now show the text as smaller and the text body as narrower, without changing the flow of the text. The font is showing the same size on both files, but clearly there is a shift. I can not find any reason for this. The font is a .ttf font that I use for all of our branded pieces and this doesn't happen with any other files I have ever packaged. There are no font errors on the preflight window or packaging window. Any advice would be greatly appreciated, as this has to go to print as soon as possible.

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