15.5% is the change from 258 to 298
Calculation steps:
[( 298 - 258 ) ÷ 258] x 100 = 15.5%
Formula
Percentage change = [(298 - 258) / 258] x 100
Subtract the new number by the original number
298 - 258 = 40
40 ÷ 258 = 0.15503875968992248
0.15503875968992248 x 100 = 15.5%