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.
Method 1. Calculate the percentage change using the equation [X(final) - X(initial)] / X(initial) * 100. Suppose the cargo space is 34.2 in the old model of a car and 32.6 cubic feet in the new model. Subtract the new value from the old value. 32.6 cubic feet - 34.2 cubic feet = -1.6 cubic feet.ethod 2. Calculate the percentage change using the equation [X(final) / X(initial) * 100] - 100 percent. Use the same cargo space example of 34.2 in the old model of a car and 32.6 cubic feet in the new model. Divide the new value by the old value: 32.6 cubic feet / 34.2 cubic feet = 0.953.