If you, a new employee, bought 2500 reais in dollars when the exchange rate was 6.19, now that the dollar has fallen to 5.92, you have lost more than 100 reais.
For those who invest small amounts, every penny lost weighs heavily and that is why I get really pissed off with this habit of telling newbies to immediately convert their money into dollars "because it always appreciates".
The current drop is a good example of how converting is not always worth it. The best thing to do is to keep an eye on trends related to currencies and always check the rates and promotions here on the platform.