Do you want to display products that have seen the biggest recent price drops? You can do this using
Price movers widgets or shortcodes.
You can set the maximum period for comparing old and new prices in
Content Egg > Settings > Price alerts > Price drops period. The larger this value, the more likely the discount will appear.
You can have sidebar widget with list of latest products with most big discount during special period. You can set period which will be used to compare price of product. For this, go to General settings - Price drops period. After changing this setting, wait your next price update, only after price update new setting will be applied.
You can also add most discounted products as content module on page, for example, as part of Homepage. Use shortcode
Shortcode has several parameters, the same as widgets
[content-egg-price-movers template=wdgt_price_movers_list limit=20 drop_type=absolute last_update=7]