Eggshell powder is highly concentrated. A relatively small amount can contain a substantial quantity of calcium, and the exact amount varies depending on the shell and preparation.
That means using large spoonfuls simply because the ingredient is “natural” is not a good idea.
More calcium is not automatically better.
Adults have recommended calcium intakes that vary according to age, sex, diet, and individual circumstances. Importantly, that total includes calcium obtained from all foods, beverages, and supplements combined.
Someone already eating a calcium-rich diet may not need additional calcium at all.
