Use the part-to-whole ratio as a cross-check
25:60 simplifies to 5:12. Reading that reduced ratio as a decimal and multiplying by 100 gives the same percentage, which is a useful check on the direct formula.
- 1.Form the ratio 25 ÷ 60.
- 2.25 ÷ 60 = 0.416667.
- 3.0.416667 × 100 = 41.6667%.