Percentage Formula: Percentages are a fundamental concept in maths, used frequently in daily life. It represents parts of a whole as fractions of 100. They're symbolised by the "%" symbol.

STEP 1 - DRAW TWO BARS: Write out the problem and circle the key information. Here it is the percentage you want to find, 20%, and the weight of the chocolate, 70 g ...

c. Using a calculator, for example to work out 20% divide 20 by 100 and multiply by the amount. Add to the original amount.

Calculating weight loss percentage is a way to see your weight loss from a new perspective. Instead of just looking at the pounds drop on a scale, it’s a way to see that weight loss as a ...