Step 1 of 4 · The trick
Percent means per hundred. To go from decimal → percent, just multiply by 100.
0.25 means 25 hundredths · already 25 per 100 · so 0.25 = 25%.
Shortcut: move the decimal 2 places to the right, then add %.
Each hop right multiplies by 10 · two hops = ×100 · which IS the percent.