-10.68% is the change from 281 to 251
Calculation steps:
[( 251 - 281 ) ÷ 281] x 100 = -10.68%
Formula
Percentage change = [(251 - 281) / 281] x 100
Subtract the new number by the original number
251 - 281 = -30
-30 ÷ 281 = -0.10676156583629894
-0.10676156583629894 x 100 = -10.68%