234.36% is the change from 259 to 866
Calculation steps:
[( 866 - 259 ) ÷ 259] x 100 = 234.36%
Formula
Percentage change = [(866 - 259) / 259] x 100
Subtract the new number by the original number
866 - 259 = 607
607 ÷ 259 = 2.3436293436293436
2.3436293436293436 x 100 = 234.36%