258.75% is the change from 240 to 861
Calculation steps:
[( 861 - 240 ) ÷ 240] x 100 = 258.75%
Formula
Percentage change = [(861 - 240) / 240] x 100
Subtract the new number by the original number
861 - 240 = 621
621 ÷ 240 = 2.5875
2.5875 x 100 = 258.75%