A security guard business acquisition is when one company purchases another company in the security guard industry. The buyer might buy all the shares of the company's stock to become the new owner of the security guard business.

A security business evaluation is an assessment of security company's operations, financials, assets, and overall value. It involves evaluating various aspects such as the company's client base, contracts, personnel, equipment, systems, reputation, and market position.

No, an acquisition does not have to be 100%. Some acquisitions may involve obtaining a majority ownership stake (over 50%), allowing for control and consolidation of the business, others may involve acquiring a minority stake or a specific percentage of ownership. The extent of the acquisition depends on the strategic goals and agreements between the buyer and the seller.