-89.11% is the change from 257 to 28
Calculation steps:
[( 28 - 257 ) ÷ 257] x 100 = -89.11%
Formula
Percentage change = [(28 - 257) / 257] x 100
Subtract the new number by the original number
28 - 257 = -229
-229 ÷ 257 = -0.8910505836575876
-0.8910505836575876 x 100 = -89.11%