Answer :

Final answer:

The percent change from 136 days to 221 days is approximately 62.5%, calculated using the formula for percentage change: [(New Value - Old Value) / Old Value] * 100.

Explanation:

The question is asking for the percent change from 136 days to 221 days. Percentage change is a measure that provides the relative change in a quantity over a specific period. It is calculated using the formula: [(New Value - Old Value) / Old Value] * 100.

So in this case, the calculation would be: [(221 - 136) / 136] * 100. This gives approximately 62.5%.

This calculation indicates an increase of 62.5% when moving from 136 to 221 days.

Always remember that when dealing with percentage changes, it's about the relative change compared to the original value, not just the difference between the two values.

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