The number of endangered species in a jungle decreased from 75 to 30 in one year.

What is the percent of decrease in the number of endangered species?

Question

The number of endangered species in a jungle decreased from 75 to 30 in one year. 

What is the percent of decrease in the number of endangered species?

anonymous · Answer

@texaschic101

terenzreignz · Answer

Here, first you need to know the decrease itself... so, by how many did it decrease, exactly? (Hint: Subtract)

anonymous · Answer

40%

terenzreignz · Answer

The difference between 75 and 30?

anonymous · Answer

im so comfused lol so its 40%

terenzreignz · Answer

The difference between 75 and 30? Come on, just subtract them....

texaschic101 · Answer

percent decrease = (old - new) / old, then multiply that by 100 to get your percent

terenzreignz · Answer

...^
Yeah, that :/

texaschic101 · Answer

percent decrease = (75 - 30) / 75...divide and get your decimal. Then multiply that by 100 to get your percent decrease

anonymous · Answer

The population in a small city increased from 1250 people to 2780 people. 

What is the percent of increase in the number of people? 
Round to the nearest percent.