The formula to calculate the percent slope is:
\[ \text{S} = \frac{\text{Ri}}{\text{R}} \times 100 \]
Where:
A percent slope is simply the slope of a line displayed as a percentage instead of a ratio of rise to run.
Example:
Calculation:
\[ \text{S} = \frac{10}{50} \times 100 = 20\% \]
