-24.63% is the change from 341 to 257
Calculation steps:
[( 257 - 341 ) ÷ 341] x 100 = -24.63%
Formula
Percentage change = [(257 - 341) / 341] x 100
Subtract the new number by the original number
257 - 341 = -84
-84 ÷ 341 = -0.24633431085043989
-0.24633431085043989 x 100 = -24.63%