<ul data-eligibleForWebStory="false">Amazon's Prime Day event showed a 14% drop in sales during the first 4 hours compared to last year, as reported by Momentum Commerce.Momentum Commerce manages Amazon sales for brands and generates about $7 billion in sales annually.This year's Prime Day event lasted 4 days compared to 2 days in 2024, leading to potential changes in consumer shopping behavior.The initial hours of Prime Day are closely monitored for consumer sentiment indicators and economic strength.