Percentage Calculator
Percent of a number, what-percent-of, and percent change.
See your attendance percentage instantly — and exactly how many of the remaining classes you can skip or must attend to stay at your threshold.
Attended ÷ held × 100 gives the running number your college uses. The calculator shows it immediately — no mental division.
With a planned total entered, the calculator works backwards from the threshold to show how many of the remaining classes you can miss — and how many you must still attend.
75% is the default because most colleges require it, but the slider covers 50–90% if your rule differs.
The calculator still shows your current percentage and how many classes you would need to attend in a row to climb back — but only if the remaining classes are enough to reach it.
Yes — any attended/total situation works: gym sessions, project meetings, or team events. The threshold slider adapts the planning math to whatever rule you set.
Skip/attend planning predicts the end-of-term percentage, and that needs a denominator for the whole term. Without it, only the current percentage is computed.