Where can you find percentages in everyday life?

VAT and other taxes such as sales tax.

Calculating how much tip to give at a restaurant.

nutritional advice (referring to the labels on food, example 20% Vitamin C, which means that 1 serving of the food or drink gives you 20% of the recommended daily allowance. So if you drank 5 servings, then you would receive 100% of the recommended daily allowance.

Interest rates - credit cards, they may quote 12% interest, which would be 1% per month. So if you carried a balance of $1000.00 they would charge you $10.00 interest that month.