Answer:
The percentage decrease of the depth of the lake from January to August is 45%.
Step-by-step explanation:
The depth of lake in January = 944 feet
The depth of lake in August = 519.20 feet
The difference is = [tex]944-519.20=424.80[/tex] feet
So, the percentage decrease of the depth of the lake from January to August will be = [tex]\frac{424.80}{944} \times100[/tex] = 45%
Therefore, the answer is 45%.