Any experienced trader know this and probably most other traders as well but I'm bored so I bring this up anyway
Maybe 1 or 2 newbies can learn from this..
Measuring price changes in % is a bit messy. I't very easy to understand when something go up 100% it's a doubling and 1000% is equal to 10 times original price. When the price go down it's a bit different. Down 50% means half original price and down 100% means zero. It can never go down more than 100% in one go. The interesting thing is in order to recover from 50% loss you need 100% gain. In other words when the price go up and recover it's ALWAYS higher %-number than when it went down. That has a psychological effect you seldom reflect over. High number up feels good, low number down feels less bad. It also matters how much it go down. Minus 10% means you have to recover 11.1% but minus 90% means the price have to recover 1000% from the bottom! For a single trading pair it doesn't matter much, price go up and down with same speed, it's just in your mind..
One place it matters though would be a list of altcoins and you try to compare up% with down% and come to the conclusion that coins are moving more up than down as a whole, that is probably very wrong!
