In the context of an insurance company's projections, it is anticipated that 40% of policyholders who have only an auto policy will renew it in the upcoming year. Additionally, 70% of those with solely a homeowner policy are expected to renew. Furthermore, 80% of individuals holding both types of policies are estimated to renew at least one policy. Based on the company’s records, 70% of policyholders have an auto policy, 50% have a homeowner policy, and 20% possess both policies. Given these statistics, what proportion of the entire pool of policyholders is projected to renew at least one policy in the coming year?