If, for example, there is an increase of 10% to a certain value, we can calculate the new value just by multiplying that value by **1,10**, which is the multiplication factor. If the increase is 20%, we multiply by **1,20**, and so on. See other examples in the table below:

Increase or Profit | Multiplication factor |

10% | 1,10 |

15% | 1,15 |

20% | 1,20 |

47% | 1,47 |

67% | 1,67 |

Example*:* Increasing 10% in the amount of $ 10.00 we have: 10 * 1.10 = **$ 11**.

In case there is a decrease, we will have:

Multiplication Factor = 1 - Discount Rate (in decimal form)

See examples in the table below:

Discount | Multiplication factor |

10% | 0,90 |

25% | 0,75 |

34% | 0,66 |

60% | 0,40 |

90% | 0,10 |

Example*:* Discounting 10% of R $ 10,00 we have: 10 * 0,90 = **$ 9.00**