$$ {25} \over {100} $$ - 25%

$$ {99} \over {100} $$ - 99%

$$ {1} \over {100} $$ - 1%

$$ {67} \over {100} $$ - 67%

$$ {44} \over {100} $$ - 44%

40% - 0.4

10% - 0.1

80% - 0.8

50% - 0.5

90% - 0.9

$$ {3} \over {100} $$ - 0.03

57% - 0.57

$$ {12} \over {100} $$ - 0.12

38% - 0.38

$$ {3} \over {10} $$ - 30%

$$ {8} \over {10} $$ - 80%

$$ {1} \over {10} $$ - 10%

$$ {4} \over {10} $$ - 40%

$$ {9} \over {10} $$ - 90%

$$ {20} \over {100} $$ - $$ {2} \over {10} $$

$$ {40} \over {100} $$ - $$ {4} \over {10} $$

$$ {70} \over {100} $$ - $$ {7} \over {10} $$

$$ {90} \over {100} $$ - $$ {9} \over {10} $$

$$ {25} \over {100} $$ = - $$ {1} \over {4} $$

$$ {50} \over {100} $$ = - $$ {1} \over {2} $$

$$ {75} \over {100} $$ = - $$ {3} \over {4} $$