Marsh & McLennan Companies, a leading global provider of professional business services, has experienced a significant decline in its sales activities. The company's revenue is primarily derived from risk management and insurance brokerage services, which account for 61.8% of its total revenue.

Marsh is widely recognized as a global leader in this sector. Additionally, Guy Carpenter contributes to the company's reinsurance services. The remaining 38.2% of sales come from human resources management consultancy services, primarily provided by Mercer and Oliver Wyman Group. These services focus on retirement program management, employee benefits, and organizational change management.

In terms of geographical distribution, the majority of the company's sales are concentrated in the United States, representing 47.9% of its total revenue. The United Kingdom follows with 15.6%, while the remaining regions collectively contribute 36.5%. This diverse portfolio highlights Marsh & McLennan's strong position in the global market, allowing them to cater to a wide range of business needs across various sectors.