Here’s the thing: unless they have dieted down to very lean levels, pretty much everybody underestimate how much weight they need to lose to look lean.
The first reason is that they underestimate how much fat they carry but the main reason is that they also underestimate the “non-fat” component of weight loss.
First, right off the bat we can assume an initial 2ish kg weight loss from fluids and glycogen. So when you think you need to lose 10kg, you really need to lose at least 12-13kg.
Then for every kg of fat you lose, you will lose around 0.25kg from “other components” (minerals, water, intramuscular fat, maybe even some muscle tissue).
So the initial 10kg, put in that light is more like 12.5-13kg… we are now talking about a total loss of 15-16kg instead of the 10kg you had originally planned.
So, assuming that your bodyfat estimation was correct you would need to go down to 74-75kg instead of the 80kg you originally thought. Which, based on your pic, makes more sense.