Delete the currency from a matrix-value

It depends on what's in the matrix, 

If you're using a measure, you need to click on the measure itself, then click on the "Measure Tools" Tab, then change the format to "whole number" with two decimal places 

If you have just dragged a column into the matrix, then you need to go into the data tab, click on the column name, then go to "table tools" format "whole number" with two decimal places 

Anonymous , In the format you might have marked it as currency. check at two place

1. https://docs.microsoft.com/en-us/power-bi/desktop-custom-format-strings

2. Or in Column/ Measure Tools