-20.62% is the change from 257 to 204
Calculation steps:
[( 204 - 257 ) ÷ 257] x 100 = -20.62%
Formula
Percentage change = [(204 - 257) / 257] x 100
Subtract the new number by the original number
204 - 257 = -53
-53 ÷ 257 = -0.20622568093385213
-0.20622568093385213 x 100 = -20.62%