237.65% is the change from 255 to 861
Calculation steps:
[( 861 - 255 ) ÷ 255] x 100 = 237.65%
Formula
Percentage change = [(861 - 255) / 255] x 100
Subtract the new number by the original number
861 - 255 = 606
606 ÷ 255 = 2.376470588235294
2.376470588235294 x 100 = 237.65%