-23.79% is the change from 290 to 221
Calculation steps:
[( 221 - 290 ) ÷ 290] x 100 = -23.79%
Formula
Percentage change = [(221 - 290) / 290] x 100
Subtract the new number by the original number
221 - 290 = -69
-69 ÷ 290 = -0.23793103448275862
-0.23793103448275862 x 100 = -23.79%