Business Calculators Cost To Lose a CustomerValue of a Customer Cost of Losing Customers AnnualMonthlyAmount of Average Sale No. of Negative Online Reviews No. of Sales per Year No of Lost Customers Per Review No. of Years a Customer Additional Customers Referrals/Year Lost Revenue (Yearly Cust Value) $0$0% of referrals who become customers Gross Sales per Year per Customer$0 Lost Revenue (Lifetime Cust Value) $0 Total Lifetime Value of a Loyal Customer$0 Clear Form* 2009 Convergys Corp. Study: Single Negative Online Review can Cost the Average Business an Average Loss of 30 Customers 2011 Cone Online Influence Report: 80% say NEGATIVE online information changed mind about purchasing a product or service