# How to calculate percentage increase for the following question!

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1. Calculate the percentage increase in the total volume of air breathed in per minute when the concentration of carbon dioxide was increased from 0.04 to 6.0 %. Show your working. (2m)
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2. For % increase, use the following formula:

New-original/original *100.

Use the table to find the values for 0.04% and 6%

0.04%- 670
6%- 2100

So you do

2100-670/670 *100= 213%

Hope that helps.

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Updated: April 16, 2016
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