What are your macros to lose weight as a %?

I set mine to 40% carb, 30% protein, 30% fat. But in practice I just try to hit my calorie and protein target and let my carbs and fat fall where they may. Some days are higher fat, some are higher carb.

50-60% fat 20-25% protein and the rest carbs

Mine are set to default, but I don't follow them. Today my macros were: 43% fat, 36% carbs, 21% protein. I prefer to keep carbs lower.

Macros are not particularly important to weight loss, especially in the short run. Calories control weight. Macros are about nutrition and health . . . but most of us want to be healthy, not just slim, right?

In the long run, under-nutrition can *indirectly* hinder weight loss: Undernutrition can cause fatigue, so we do less in daily life, and can't bring energy to our workouts. Those things can reduce our calorie expenditure, and slow our weight loss. Undernutrition can cause us to not feel full, so make it hard to stick to a sensible calorie level. If we don't feel full, so start to consistently over-eat our calorie goal, that obviously hinders weight loss. But both of those affect weigh directly through calories, so are only indirectly about nutrition.

For most people, the MFP default percents are fine. If you want to be more personally tailored, it makes more sense IMO to look at grams, not percents.

Personally, I believe in 0.6-0.8g protein, minimum, per pound of healthy goal weight (that's roughly equivalent to 0.8-1g per pound of lean body mass (LBM), for most people, but most people don't know their LBM); 0.35-0.45g fats minimum per pound of bodyweight (maybe a little less, like 0.3g, could be OK for men); and 5+ minimum (ideally 10+) servings of varied, colorful veggies & fruits daily, for micronutrients and fiber.

With macros, close is always good enough, especially if over some days, under others, so it averages out. It needn't be exact, as if it were some kind of magic spell.