Rescue Yourself from a Losing Position:

Loss of 10%, need to rise 11% to break even
Loss of 20%, need to rise 25% to break even
Loss of 30%, need to rise 42.86% to break even
Loss of 40%, need to rise 66.67% to break even
Loss of 50%, need to rise 100% to break even
Loss of 60%, need to rise 150% to break even
Loss of 70%, need to rise 233.33% to break even
Loss of 80%, need to rise 400% to break even
Loss of 90%, need to rise 900% to break even
Loss of 100%, that's very hard to recover from
Brothers, where are you? #跌无止境