You are evaluating the goodwill impairment charges of two companies, IBM and Cisco Systems, for the fiscal year 2023.

Requirements:

1. IBM recorded a goodwill impairment charge of $2 billion for the fiscal year 2023. Cisco Systems recorded a goodwill impairment charge of $1.5 billion during the same period.
2. Calculate the percentage of goodwill impairment relative to each company's total goodwill.
3. Discuss potential reasons for the goodwill impairment charges and their impact on the financial statements of IBM and Cisco Systems.