This page covers the

and

keys found on many CALC 1 Calculators used to calculate % change and % of total respectively.

See Calculations Using the Chain (CHN) Calculation Mode, Calculations Using Algebraic Formulas or Calculations Using RPN and the Stack for general percentage calculations.

Also see the Percentages Calculator for keys to calculate these values.

## Percent Change Key Examples

To |
Press (CHN, ALG) |
Press (RPN) |
Display |

Find the percent change from 320 to 324 |
320 = 324 Δ% |
320 ENTER 324 Δ% |
1.25 |

Find the percent change from 550 to 324 |
550 = 324 Δ% |
550 ENTER 324 Δ% |
-41.09 |

## Percent of Total Key Examples

To |
Press (CHN, ALG) |
Press (RPN) |
Display |

Find the percent of total 24 is of 320 |
320 = 24 %T |
320 ENTER 24 %T |
7.50 |

Find the percent of total 100 is of 320 |
320 = 100 %T |
320 ENTER 100 %T |
31.25 |

Using the "long press" gesture will display a hint about any key. (Video: Displaying a hint) .