-75.52% is the change from 290 to 71
Calculation steps:
[( 71 - 290 ) ÷ 290] x 100 = -75.52%
Formula
Percentage change = [(71 - 290) / 290] x 100
Subtract the new number by the original number
71 - 290 = -219
-219 ÷ 290 = -0.7551724137931034
-0.7551724137931034 x 100 = -75.52%