Buy - Price has decreased by at least t% in the past p days/weeks/months
Sell - Price has decreased by at least t% in the past p days/weeks/months
Parameters available:
t - the duration leading to the p% price decrease
p - the minimum percentage of the decrease in price
Rule type - please refer to 140 for details
Data type - please refer to 141 for details
![\includegraphics[width=0.7\textwidth ,bb=0 0 292 184]{PriceDecrease.png}](images/img-0025.png)