Original sentence: (Based on at least 50% of land mass inside).The most telling research conclusion: the 10/40 Window includes close to 100% of those who are both most-poor and have least-access to Christian resources.The net effect: a simple message contrasting the major needs and few resources devoted to this part of the world
Edited sentence: The most telling research conclusion: the 10/40 Window includes more than 99% of those who are both most-poor and have least-access to Christian resources