Trading agent with Rules table

The meaning of this Rule would be: for the BTC/USD pair, if the percentual value (RULE)  compared to minus one day (COMPARE) changed -2 percent or more (RULE_VALUE) , then SELL (ACTION) 25 (ACTION_VALUE) percent (ACTION_TYPE) of my assets.

The columns RULE and ACTION_TYPE can have the values PCT (percentual) or ABS (absolute value).