Complex sentence: Approximately 25% of the food distributed by Northwest Harvest is purchased staples (rice, beans, pasta, canned tomatoes, canned fruit, and various forms of protein); the rest comes from in-kind donations, mostly from businesses and institutions.
Split into simpler sentences: Approximately 25% of the food distributed by Northwest Harvest is purchased staples, such as rice, beans, pasta, canned fruit and vegetables, and protein. The other 75% comes from in-kind donations, mostly from businesses and institutions.