In multiplying a number by $\dfrac{1}{100}$, the result may be obtained by moving the decimal point of that number． 
Overseas Competition->Knowledge Point->Calculation Modules->Decimals->Basic Understanding of Decimals
Multiplying a number by $\dfrac{1}{100}$, is the same as dividing by $100$. When dividing by $100$, move the decimal point $2$ places left. 