Amazon Prime Day Household Spending Down 16%, Survey Says (2)

Amazon.com Inc.’s annual Prime Day sale is off to a slow start, according to a survey conducted by market research firm Numerator.

The average household surveyed had spent about $89 as of 4 p.m. New York time, Numerator said on Tuesday, down about 16% from the same time during last year’s event, which began in July.

Shoppers stocked up on things like trash bags, cat treats and makeup remover, according to the survey, which is based on more than 6,700 Prime Day orders from more than 3,600 households.

Amazon’s marquee promotion — now in its 12th year — ...