,

@mitchell

To calculate the Rate of Change (ROC) using Swift, you can follow these steps:

- Define two variables for the initial value and final value for which you want to calculate the ROC.

1 2 |
let initialValue = 50.0 let finalValue = 70.0 |

- Calculate the change in value by subtracting the initial value from the final value.

```
1
``` |
let changeInValue = finalValue - initialValue |

- Calculate the ROC by dividing the change in value by the initial value and multiplying by 100 to get the percentage change.

```
1
``` |
let ROC = (changeInValue / initialValue) * 100 |

- Print or use the calculated ROC value as needed.

```
1
``` |
print("Rate of Change (ROC) is: (ROC)%") |

By following these steps, you can easily calculate the Rate of Change (ROC) using Swift programming language.