-27.61% is the change from 355 to 257
Calculation steps:
[( 257 - 355 ) ÷ 355] x 100 = -27.61%
Formula
Percentage change = [(257 - 355) / 355] x 100
Subtract the new number by the original number
257 - 355 = -98
-98 ÷ 355 = -0.27605633802816903
-0.27605633802816903 x 100 = -27.61%