11.63% is the change from 258 to 288
Calculation steps:
[( 288 - 258 ) ÷ 258] x 100 = 11.63%
Formula
Percentage change = [(288 - 258) / 258] x 100
Subtract the new number by the original number
288 - 258 = 30
30 ÷ 258 = 0.11627906976744186
0.11627906976744186 x 100 = 11.63%