100.79% is the change from 254 to 510
Calculation steps:
[( 510 - 254 ) ÷ 254] x 100 = 100.79%
Formula
Percentage change = [(510 - 254) / 254] x 100
Subtract the new number by the original number
510 - 254 = 256
256 ÷ 254 = 1.0078740157480315
1.0078740157480315 x 100 = 100.79%