What?

lol, i thought about making one of these threads too.. i only moved 5%, but 5% in level 9 is quite a massive jump.. i couldn't trace down the cause either.. ^^

Probably a game you gave away is in a bundle (e.g. Deponia in one of the Daedalic bundles) and said bundle is discounted. If the bundle is cheaper than the single game, Steam will report the bundle instead of the game, so Steamgifts will take the bundle base price.