101.16% is the change from 259 to 521
Calculation steps:
[( 521 - 259 ) ÷ 259] x 100 = 101.16%
Formula
Percentage change = [(521 - 259) / 259] x 100
Subtract the new number by the original number
521 - 259 = 262
262 ÷ 259 = 1.0115830115830116
1.0115830115830116 x 100 = 101.16%