259.22% is the change from 255 to 916
Calculation steps:
[( 916 - 255 ) ÷ 255] x 100 = 259.22%
Formula
Percentage change = [(916 - 255) / 255] x 100
Subtract the new number by the original number
916 - 255 = 661
661 ÷ 255 = 2.592156862745098
2.592156862745098 x 100 = 259.22%