-9.6% is the change from 250 to 226
Calculation steps:
[( 226 - 250 ) ÷ 250] x 100 = -9.6%
Formula
Percentage change = [(226 - 250) / 250] x 100
Subtract the new number by the original number
226 - 250 = -24
-24 ÷ 250 = -0.096
-0.096 x 100 = -9.6%
Example