-95.72% is the change from 257 to 11
Calculation steps:
[( 11 - 257 ) ÷ 257] x 100 = -95.72%
Formula
Percentage change = [(11 - 257) / 257] x 100
Subtract the new number by the original number
11 - 257 = -246
-246 ÷ 257 = -0.9571984435797666
-0.9571984435797666 x 100 = -95.72%