Find the percent change if a quantity changes from $P_{1}$ to $P_{2}$.
\[
P_{1}=1.9, P_{2}=0.79
\]
The percent change is $\%$.
(Round to the nearest tenth as needed.)
Answer
Final Answer: The percent of change from 1.9 to 0.79 is \(\boxed{-58.4\%}\)
Step 1 ：Find the percent of change from the first number to the second. Round the answer to the nearest tenth of a percent: 1.9 to 0.79
Step 2 ：Use the formula for percent change: \[\text{{Percent Change}} = \frac{{\text{{New Value}} - \text{{Old Value}}}}{{\text{{Old Value}}}} \times 100\]
Step 3 ：Substitute the given values into the formula: old value is 1.9 and new value is 0.79
Step 4 ：Calculate the percent change: \[-58.421052631578945\]
Step 5 ：Round the percent change to the nearest tenth of a percent: \[-58.4\]
Step 6 ：Final Answer: The percent of change from 1.9 to 0.79 is \(\boxed{-58.4\%}\)
