What is the formula to find a part of a whole using percentage?

To determine a part of a whole using a percentage, the correct approach involves multiplying the whole by the percentage expressed as a decimal. This is why the formula states that the part equals the percentage times the whole.

To use the formula in practice, you first convert the percentage into a decimal by dividing it by 100. For example, if you want to find 20% of a whole (let's say 50), you convert 20% to a decimal (0.20) and then perform the multiplication: 50 x 0.20 = 10. Therefore, the part is 10, which is 20% of 50.

This relationship highlights the direct calculation of the part based on both the total amount (the whole) and the proportion represented by the percentage. The correct formula is derived from the principles of proportion and percentage calculation in mathematics.