-99.22% is the change from 257 to 2
Calculation steps:
[( 2 - 257 ) ÷ 257] x 100 = -99.22%
Formula
Percentage change = [(2 - 257) / 257] x 100
Subtract the new number by the original number
2 - 257 = -255
-255 ÷ 257 = -0.9922178988326849
-0.9922178988326849 x 100 = -99.22%