257.65% is the change from 255 to 912
Calculation steps:
[( 912 - 255 ) ÷ 255] x 100 = 257.65%
Formula
Percentage change = [(912 - 255) / 255] x 100
Subtract the new number by the original number
912 - 255 = 657
657 ÷ 255 = 2.5764705882352943
2.5764705882352943 x 100 = 257.65%