-96.21% is the change from 290 to 11
Calculation steps:
[( 11 - 290 ) ÷ 290] x 100 = -96.21%
Formula
Percentage change = [(11 - 290) / 290] x 100
Subtract the new number by the original number
11 - 290 = -279
-279 ÷ 290 = -0.9620689655172414
-0.9620689655172414 x 100 = -96.21%