-74.83% is the change from 290 to 73
Calculation steps:
[( 73 - 290 ) ÷ 290] x 100 = -74.83%
Formula
Percentage change = [(73 - 290) / 290] x 100
Subtract the new number by the original number
73 - 290 = -217
-217 ÷ 290 = -0.7482758620689656
-0.7482758620689656 x 100 = -74.83%