100 kilograms of potatoes have 1 kilo potatoes and 99 kilos water. Dehydrate them, the potato weight doesn't change but the water weight does. 1 kilo is 1% of 100 kilos. If 1 kilo is 2% of something, the total weight would be 50 kilos.

[Christ, that's a lot of words. He takes a deep breath - with a very long inhale for some reason - and sighs.]

Am I right?