Question

How would I go about doing this logic in an if else statement?

If numeric_field_value_1 is x
   Increase numeric_field_value_2 by ?%

If numeric_field_value_1 is y
   Decrease numeric_field_value_2 by ?%

x is any number from 51 – 100.

y is any number from 49 – 0.

?% is the percentage that needs to be increased or decreased from numeric_field_value_2. For every number increase (for x) or decrease (for y) in value there is a 2% increase or decrease for every count/number. Example 53 equates to 6% increase and 45 equates to 10% decrease. Note that 50 is the base value for x and y and there is no increase or decrease when the value for x or y is 50.

*numeric_field_value_1* is a variable which value is pre-defined somewhere else.

*numeric_field_value_2* is another variable which value is pre-defined somewhere else.

Example:

numeric_field_value_1 = 60

numeric_field_value_2 = 175

Now 175 needs to be increased by 20%

---

numeric_field_value_1 = 45

numeric_field_value_2 = 80

Now 80 needs to be decreased by 10%

Answer 1

if(numeric_field_value_1 > 50)
{
    numeric_field_value_2 *= 1+((numeric_field_value_1-50)*2)/100;
}
else if(numeric_field_value_1 < 50)
{
    numeric_field_value_2 *= 1-((50-numeric_field_value_1)*2)/100;
}
else
{
    //Undefined behavior
}

Should do the trick.