Dropping Odds Help: Follow Dropping Odds and make use of the latest betting market trends! Start at any time by monitoring betting odds movements with Odds Portal. The "Drop" column in the dropping odds table above indicates percentage of odds decrease, calculated as an average from all odds that were decreased compared to their starting value. The box with a yellow background serves to label starting and current values of odds that were amended since their release. Use dropping odds to your advantage - simply bet with bookmaker who hasn't caught up with the latest market trends.