Теория:

When you want to give a business report, you should use the appropriate vocabulary.
  
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Sales figures - the value or amount of the total sales of an industry's or company's products for a particular period;
 
Percent - for or out of every 100, shown by the symbol %;
 
Percentage - an amount of something, expressed as a number out of 100;
 
Quarter - one of four periods of time into which a year is divided for financial calculations such as profits or bills (= orders for payment);
 
Lose a huge fraction - to stop having a very small number or amount that you had before;
 
Currency - the units of money used in a particular country;
 
Forecast - a report saying what is likely to happen in the future;
 
Estimate - a guess of what a size, value, amount, etc might be;
 
Double - to increase and become twice the original size or amount, or to make something do this;
 
Market share - the number of things that a company sells compared with the number of things of the same type that other companies sell.
 
Examples:
 
We need to double our sales.

Russian currency has lost its value.
Источники:
www.businessreviewusa.com