-10.53% is the change from 266 to 238
Calculation steps:
[( 238 - 266 ) ÷ 266] x 100 = -10.53%
Formula
Percentage change = [(238 - 266) / 266] x 100
Subtract the new number by the original number
238 - 266 = -28
-28 ÷ 266 = -0.10526315789473684
-0.10526315789473684 x 100 = -10.53%