In "percentages agreement", Stalin and Churchill allegedly divided Southeastern Europe to sphere of influences of the United Kingdom and the Soviet Union. According to Churchill's account quoted by wikipedia,
Churchill suggested that the Soviet Union should have 90 percent influence in Romania and 75 percent in Bulgaria; the United Kingdom should have 90 percent in Greece; in Hungary and Yugoslavia, Churchill suggested that they should have 50 percent each. Churchill wrote it on a piece of paper which he pushed across to Stalin, who ticked it off and passed it back.
If this were true, how were they going to translate these numbers into concrete reality? I mean, how do they define stuff like 90%, 75%, 50% when talking about influence over other countries?