275.29% is the change from 255 to 957
Calculation steps:
[( 957 - 255 ) ÷ 255] x 100 = 275.29%
Formula
Percentage change = [(957 - 255) / 255] x 100
Subtract the new number by the original number
957 - 255 = 702
702 ÷ 255 = 2.7529411764705882
2.7529411764705882 x 100 = 275.29%