96.91% is the change from 259 to 510
Calculation steps:
[( 510 - 259 ) ÷ 259] x 100 = 96.91%
Formula
Percentage change = [(510 - 259) / 259] x 100
Subtract the new number by the original number
510 - 259 = 251
251 ÷ 259 = 0.9691119691119691
0.9691119691119691 x 100 = 96.91%