Operation of WPP[edit] WPP is run prior to compilation (in other words, before even the C preprocessor), and generates a trace message header for each file that it processes (by default this header is filename.tmh, where filename is the name of the processed source file). WPP's understanding of C/C++ syntax is very limited.
Divide the new value by the old value and multiply by 100 to find the absolute relationship between the two values. A process that is similar (but not identical) to the process used to find percent change is that used to find the absolute percentage relationship between the old and new values.
To determine percentage increase, divide the change by the original number. An increase from 25 to 75 is calculated in this manner. The difference is 50. 50/25 = 2. That figure times 100 = 200%, or an increase of 200%. Decrease is the exact same process. To determine the percentage decrease, make these calculations.5/75 = .33, or a 33% decrease. In order to figure a percentage increase of anything, multiply the number by the percentage. For example if you have a number of 100 and you wish to increase it by 50%, multiply 100 by 1.50 and get the result of 150.