259.15% is the change from 71 to 255
Calculation steps:
[( 255 - 71 ) ÷ 71] x 100 = 259.15%
Formula
Percentage change = [(255 - 71) / 71] x 100
Subtract the new number by the original number
255 - 71 = 184
184 ÷ 71 = 2.591549295774648
2.591549295774648 x 100 = 259.15%