Calculator it's wrong

[Maksim91k]

Calculator it's wrong, I put "100-20%" and the results is 99.8
I download the original Google calculator (it's exactly same) but 100-20% is 80

[MarlonUk1]

did you change the calculator mode? i am not much of an math expert but changing the mode to RAD INV or DEG have different answer to complicated probs

[Maksim91k]

I have tried everything but same results. 😞

[MarlonUk1]

well apparently mine says the same as yours, it might be it uses different way of stating the problem or it is just faulty.

[Uliwooly]

@Maksim91k

It should be 80, I get 80 on all calculators, which makes sense

100-20% = 100 -  [(100*20)/100] = 80

[_alexdon_]

@Maksim91k The xperia calculator seems correct to me. 100 - 20% = 99.8.

20/100 = 0.2. You didn't specify anywhere that it is 20% of 100. Just try to use the google calculator and type in 100-20%*100.

It will give you the same result as the first 100 - 20%. Google calculator is wrong or not correctly set up.

[Maksim91k]

@alexdon
You have right but all calculators doing that it's not only Google's. All the calculators are set up to doing 100-80%=20 like (20/100) x 100 but manual. So for me it's wrong because it's not only one company but alls

[_alexdon_]

Mathematically it is the most correct one. You can simply multiply 20% with 100 and you'll get the same answer (the one you're looking for).

You can forward your idea to your Local support but I don't think this needs to be changed, you don't change something that is working correctly.

[Maksim91k]

I working with % so I need a "quick" version anyway thank you for your answers.

[_alexdon_]

@Maksim91k But I have tried 100-20% directly on the inbuilt calculator and it resulted 80, not 99.8. Only if you place them between () it will understand the calculus differently.