sound tu me like yu hav exponential dekae
"leek rate" =0.0063 per minut
how much left=(start much)*e^-0.0063x
yu wanna find x so that left=0.01*(start)
or e^-0.0063x=0.01
ln(e^-0.0063x)=-0.0063x =ln(0.01)=-4.605170186
x=-4.60517018/-0.0063
=730.979
or bout 731 minuts
or 12.183 ours