-10.89% is the change from 248 to 221
Calculation steps:
[( 221 - 248 ) ÷ 248] x 100 = -10.89%
Formula
Percentage change = [(221 - 248) / 248] x 100
Subtract the new number by the original number
221 - 248 = -27
-27 ÷ 248 = -0.10887096774193548
-0.10887096774193548 x 100 = -10.89%