-6.23% is the change from 257 to 241
Calculation steps:
[( 241 - 257 ) ÷ 257] x 100 = -6.23%
Formula
Percentage change = [(241 - 257) / 257] x 100
Subtract the new number by the original number
241 - 257 = -16
-16 ÷ 257 = -0.0622568093385214
-0.0622568093385214 x 100 = -6.23%