shrinkage
noun [ U ]
uk/ˈʃrɪŋkɪdʒ/ usthe process or amount by which something becomes smaller or less:
Conservatives are not happy about the private sector's shrinkage and the public sector's expansion.
shrinkage in sth A permanent shrinkage in supplies would severely damage today's oil-based economy.
shrinkage of sth He expects employment to grow by 1.9% this year compared to a shrinkage of 0.4% last year.
sales/deficit/brand shrinkage Two years of double-digit sales shrinkage have hurt the industry.
COMMERCE
the loss of goods for sale because of damage, stealing, etc.:
The retailer's stores lose about $1m a week from shrinkage.
inventory/stock shrinkage