-23.35% is the change from 257 to 197
Calculation steps:
[( 197 - 257 ) ÷ 257] x 100 = -23.35%
Formula
Percentage change = [(197 - 257) / 257] x 100
Subtract the new number by the original number
197 - 257 = -60
-60 ÷ 257 = -0.23346303501945526
-0.23346303501945526 x 100 = -23.35%