279.61% is the change from 255 to 968
Calculation steps:
[( 968 - 255 ) ÷ 255] x 100 = 279.61%
Formula
Percentage change = [(968 - 255) / 255] x 100
Subtract the new number by the original number
968 - 255 = 713
713 ÷ 255 = 2.796078431372549
2.796078431372549 x 100 = 279.61%