What you'll find is that tiny changes don't make much difference (other than to get you frustrated haha). The body likely won't sense much change from just 200 cals less (you'll be lucky if you re-comped with that).
The good news is that the changes you do make can be "milked" for weeks. So say you found a calorie intake that makes you lose weight, that calorie intake can be maintained for weeks before a change is needed. Then you'd make a change to energy expenditure (extra cardio). For me personally, training 5x/week (HIIT 1-2x/week and lifting 3-4x/week), I was able to lean out mostly from dietary changes.
Here's how my last trim went (previously bulking on 6-7000cals/day), using callipers:
Week 1 - 4000cals - 15% BF, No cardio
Week 2 - 4000cals - 14% BF, Dropped 1lbs BW
Week 3 - 4000cals - 14% BF, Added 1lbs BW
Week 4 - 3500cals - 13% BF, Dropped 2lbs BW
Week 5 - 3500cals - 12% BF, Dropped 3lbs BW
Week 6 - 3500cals - 12% BF, Dropped 1lbs BW
Week 7 - 3000cals - 12% BF, Dropped 1lbs BW
Week 8 - 2000-3500cals - 11% BF, Dropped 1lbs BW (calorie+carb cycling)
Week 9 - 2000-3500cals - 11% BF, Maintained BW (calorie+carb cycling)
Week 10 - 2000-3500cals - 10% BF, Dropped 5lbs!!! BW (calorie+carb cycling+2 HIIT sessions/week)
Week 11 - 2000-3500cals - 9% BF, Dropped 1lbs BW (calorie+carb cycling+2 HIIT sessions/week)
Week 12 - 2000-3500cals - 8% BF, Dropped 1lbs BW (calorie+carb cycling+2 HIIT sessions/week)
Strength was still slightly improving right up to week 7! From that point right up until week 12 (~8% BF) strength was maintaining, but started to wane after that point, so I decided to end the trim there (maintained weight for a few weeks before bulking again to allow new weight to "stabilise").
On week 8 I switched to calorie/carb cycling (2 high days/week, and 5 low days/week). From this change alone, I was able to drop some fat. Then in week 10 I (finally!) added cardio and made a very quick drop in BW until it stabled out to 1lbs losses each week till the end.
If I wanted to get shredded (not good for long term muscle gains), obviously I would have continued, added more cardio firstly, and lastly dropped a few hundred cals from high days and low days.