John contributed $3,000 to his roth ira last year. this year, he contributed $1,000 to his roth ira. what was the percent decrease to the nearest percent?

Last year contribution (L) = $ 3,000

This year contribution (T) = $ 1,000

Hence, percentage decrease =  = - 200 %

The negative sign shows the decrease in the percentage.

Hence, the percentage decrease was by 200 %. 

Its a right angled triangle not a right triangle