Question

How to calculate the percentage using a formula?

Answer 1

Calculate the percentage:

Formula of percentage $\mathrm{P}(\%)=\frac{\mathrm{Value}}{\mathrm{Total}\mathrm{Value}}\times 100$

Example: Calculate$20\%\mathrm{of}150$.

Let $20\%$ of $150$ be $\mathrm{x}.$

$$\begin{gathered} 20=\frac{\mathrm{x}}{150}\times 100\mathbf{}\left[\because \mathrm{P}(\%)=\frac{\mathrm{Value}}{\mathrm{Total}\mathrm{Value}}\times 100\right] \\ \mathrm{x}=\frac{20\times 150}{100} \\ \mathrm{x}=30 \end{gathered}$$

Hence, this is the way to calculate percentages using a formula.