PERCENTAGE COMPUTATION

Calculate 65% of 460:

50% of 460 =230
10% of 460 = 46
5% of 460 = 23 (half 46)
------------------------------
65% of 460 = 299 (sum) 

EXAMPLE.

Calculate 67.5% of 460:
50% of 460 = 230
10% of 460 = 46
5% of 460 = 23 (half 46)
2.5% of 460 =11.5 (half 23)
------------------------------
67.5% of 460 = 310.5 (sum )