265.83% is the change from 240 to 878
Calculation steps:
[( 878 - 240 ) ÷ 240] x 100 = 265.83%
Formula
Percentage change = [(878 - 240) / 240] x 100
Subtract the new number by the original number
878 - 240 = 638
638 ÷ 240 = 2.658333333333333
2.658333333333333 x 100 = 265.83%