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# CALC 1 Percentage Change and Percent of Total Calculations 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 calulations.

## 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

Also see the Percent Change Formula Calculator.

## 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

Also see the Percent Of Total Formula Calculator.

Using the "long press" gesture will display a hint about any key. (Video: Displaying a hint) You can inspect the Key Details to see the formulas and functions for any key.