Right. I slipped and forgot we were dealing with metric. I'm not gonna lie...I hate everything metric. But, I have many faults.
Anyway, ppg stands for points per gallon. It tells you how many gravity points you get when dissolving a known quantity of something in a gallon of water.
DME is generally around 40-42, of memory serves, and table sugar around 45. You can guess your enhancer is somewhere in the middle. So if you added roughly 2L water and 1kg of the enhancer, you added around 85 gravity points into nearly 20L water, so 85/5=17. That's 17 gravity points. So 1.025 + .017 = 1.042, which is your calculated OG after all additions. Seem good to you?