-90.66% is the change from 257 to 24
Calculation steps:
[( 24 - 257 ) ÷ 257] x 100 = -90.66%
Formula
Percentage change = [(24 - 257) / 257] x 100
Subtract the new number by the original number
24 - 257 = -233
-233 ÷ 257 = -0.9066147859922179
-0.9066147859922179 x 100 = -90.66%