2755.56% is the change from 9 to 257
Calculation steps:
[( 257 - 9 ) ÷ 9] x 100 = 2755.56%
Formula
Percentage change = [(257 - 9) / 9] x 100
Subtract the new number by the original number
257 - 9 = 248
248 ÷ 9 = 27.555555555555557
27.555555555555557 x 100 = 2755.56%