Percent means parts out of 100 x%=x/100 'of' means multiply 552.5=x/100 times 425 divide bothsides by 425 552.5/425=x/100 multiply both sides by 100 55250/425=x use calculator 130=x
Multiple each sales total by .1 and then add 150. If they equal then it works, if they don't then it doesn't. No other way I can think of to explain this.