-8.3% is the change from 241 to 221
Calculation steps:
[( 221 - 241 ) ÷ 241] x 100 = -8.3%
Formula
Percentage change = [(221 - 241) / 241] x 100
Subtract the new number by the original number
221 - 241 = -20
-20 ÷ 241 = -0.08298755186721991
-0.08298755186721991 x 100 = -8.3%