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`PC = ( FF - FI )/( FI )`

Enter a value for all fields

The **Percentage Change in Volumetric Flow **calculator computes the ratio of change in flow rate from an initial flow rate to a final flow rate.

**INSTRUCTIONS:** Choose units and enter the following:

- (
**FI**) This is the initial flow rate. - (
**FF**) This is the final flow rate.

**Percent Change in Flow Rate (PC):** The calculator the percent change in volumetric flow rate.

- Percent Change in Length
- Percent Change in Area
- Percent Change in Volume
- Percent Change in Flow Rate
- Volume of Geometric Shapes
- Percent Change in Weight

The formula for percent change in flow rate is:

PC = (FF - FI) / FI

where:

- PC is the percent change in volumetric flow rate
- FF is the final flow rate
- FI is the initial flow rate