The Patagonian Ice Fields in South America are experiencing rapid ice loss due to climate change. Between 2015 and 2020, the combined ice volume loss across the entire Patagonian region was 125 km3. During this same period, the Northern Patagonian Icefield alone accounted for 35 km3 of this volume loss.
Calculate the percentage of total Patagonian ice volume lost that occurred specifically in the Northern Patagonian Icefield between 2015 and 2020.