Have you ever stared at a spreadsheet, struggling to make sense of percentage calculations that just don’t seem to add up? Whether it’s a confusing formula, a misstep with zero values, or an ...

The consumer price index (CPI) increased by 0.5 percent in January to hit an annual increase of 3.0 percent after advancing by 2.9 percent in December. Economists were expecting the CPI to increase by ...