It can be stated clearly that this refers to the time of Pekah's reign. Alternate translation: "In the days of the reign of Pekah king of Israel" or "During the time that Pekah was king of Israel" (See: [[rc://en/ta/man/translate/figs-explicit]])
Here "He" refers to Tiglath-Pileser and represents him and his army. Carrying the people to Assyria represents forcing them to go to Assyria. Alternate translation: "He and his army forced the people to go to Assyria (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-metaphor]])
It can be stated clearly which people these are. Alternate translation: "the people of those places" or "the people of Israel" (See: [[rc://en/ta/man/translate/figs-explicit]])