8.53% is the change from 258 to 280
Calculation steps:
[( 280 - 258 ) ÷ 258] x 100 = 8.53%
Formula
Percentage change = [(280 - 258) / 258] x 100
Subtract the new number by the original number
280 - 258 = 22
22 ÷ 258 = 0.08527131782945736
0.08527131782945736 x 100 = 8.53%