Error in percentage calculation

### What Happened?

When performing an addition or subtraction operation with percentages, the program ignores that it is a percentage.
For example:
100 + 2% = 100.02 (the correct would be 102).
100 - 2% = 99.98 (correct would be 98)

This happens with any number you type.

### Steps to Reproduce

1) I opened the calculator from "Applications".
2) I typed the numbers from the keyboard, including the symbols.
3) I get the wrong result.
4) I enter the values and symbols from the calculator program itself.
5) I persist with the error.

### Expected Behavior

Basically because it is expected to operate with percentages, but what it seems to perform is a decimal operation.

### OS Version

6.x (Odin)

### Software Version

Latest release (I have run all updates)

### Log Output

_No response_

### Hardware Info

_No response_