At the class level define a public static float to track the remaining power $($such as what was done for the number of medicine boxes dropped$)$ set it at $4500$ to begin with and then recompute this in the power consumption method you create.Create a method in the DroneDataDisplay Class to show the percentage of remaining power $$ text format is fine. This can be where the calculation is performed too.Add a text UI in the Drone Data Panel called Battery Power.Don$$t forget to drag and drop the Battery Power text UI in the correct slot in Drone Data Display script component in the Inspector Panel.