Enter a percent P and a number N—compute P% of N (= N×P÷100).
It computes P% of N as N × (P ÷ 100) (six decimals). Labels match Percent P and Number N on the form; non‑numeric inputs show the invalid alert.
This calculator uses plain decimal numbers. If a result looks wrong, check whether you used a comma instead of a dot (or vice versa) where the field expects one.