-4.51% is the change from 266 to 254
Calculation steps:
[( 254 - 266 ) ÷ 266] x 100 = -4.51%
Formula
Percentage change = [(254 - 266) / 266] x 100
Subtract the new number by the original number
254 - 266 = -12
-12 ÷ 266 = -0.045112781954887216
-0.045112781954887216 x 100 = -4.51%