The formula to calculate the RAM usage percentage is:
\[ RAM_{Usage} = \left( \frac{Used\ RAM}{Total\ RAM} \right) \times 100 \]
Where:
Let's say the total RAM is 16 GB and the used RAM is 8 GB. Using the formula:
\[ RAM_{Usage} = \left( \frac{8}{16} \right) \times 100 \]
We get:
\[ RAM_{Usage} = 50 \]
So, the RAM usage is 50%.