-36.23% is the change from 403 to 257
Calculation steps:
[( 257 - 403 ) ÷ 403] x 100 = -36.23%
Formula
Percentage change = [(257 - 403) / 403] x 100
Subtract the new number by the original number
257 - 403 = -146
-146 ÷ 403 = -0.36228287841191065
-0.36228287841191065 x 100 = -36.23%