Iphones cost $$ \$ 800 $$ in 2020. In 2022, it cost $$ \$ 750 $$.

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To analyze the price change of iPhones from 2020 to 2022, we can follow these steps:

1. **Identify the known conditions:**
   - Price in 2020: $$ P_{2020} = 800 $$
   - Price in 2022: $$ P_{2022} = 750 $$

2. **Calculate the change in price:**
   - The change in price can be calculated as:
     $$
     \Delta P = P_{2022} - P_{2020}
     $$

3. **Calculate the percentage change in price:**
   - The percentage change can be calculated using the formula:
     $$
     \text{Percentage Change} = \left( \frac{\Delta P}{P_{2020}} \right) \times 100
     $$

Now, let's perform the calculations step by step.

### Step 1: Calculate the change in price
$$
\Delta P = 750 - 800 = -50
$$

### Step 2: Calculate the percentage change
$$
\text{Percentage Change} = \left( \frac{-50}{800} \right) \times 100
$$

Now, I will calculate the percentage change.
Calculate the value by following steps:
- step0: Calculate:
  $$\left(\frac{-50}{800}\right)\times 100$$
- step1: Divide the terms:
  $$\left(-\frac{1}{16}\right)\times 100$$
- step2: Remove the parentheses:
  $$-\frac{1}{16}\times 100$$
- step3: Reduce the numbers:
  $$-\frac{1}{4}\times 25$$
- step4: Multiply:
  $$-\frac{25}{4}$$
The percentage change in the price of iPhones from 2020 to 2022 is:

$$
\text{Percentage Change} = -6.25\%
$$

### Summary:
- The price of iPhones decreased by $$ \$50 $$ from 2020 to 2022.
- This represents a percentage decrease of $$ 6.25\% $$.
The price of iPhones decreased by \$50 from 2020 to 2022, which is a 6.25% decrease.

Iphones cost \( \$ 800 \) in 2020. In 2022, it cost \( \$ 750 \).

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