-9.73% is the change from 257 to 232
Calculation steps:
[( 232 - 257 ) ÷ 257] x 100 = -9.73%
Formula
Percentage change = [(232 - 257) / 257] x 100
Subtract the new number by the original number
232 - 257 = -25
-25 ÷ 257 = -0.09727626459143969
-0.09727626459143969 x 100 = -9.73%