11.95% is the change from 251 to 281
Calculation steps:
[( 281 - 251 ) ÷ 251] x 100 = 11.95%
Formula
Percentage change = [(281 - 251) / 251] x 100
Subtract the new number by the original number
281 - 251 = 30
30 ÷ 251 = 0.11952191235059761
0.11952191235059761 x 100 = 11.95%