I took a hunch of 10% as the high income class who never have to budget energy for food, heating, gas, air conditioning, travel anywhere, etc. They live in energy surplus.
Thus, 90% of people have to budget their energy needs carefully. They have a deficit. It's on a spectrum as some see a deficit because they can't afford plane tickets, while others have a real deficit close to life threatening e.g. not enough warm clothes.

After research, the high income class is actually 7% of people — https://www.pewresearch.org/short-reads/2021/07/21/are-you-in-the-global-middle-class-find-out-with-our-income-calculator/