-48.25% is the change from 485 to 251
Calculation steps:
[( 251 - 485 ) ÷ 485] x 100 = -48.25%
Formula
Percentage change = [(251 - 485) / 485] x 100
Subtract the new number by the original number
251 - 485 = -234
-234 ÷ 485 = -0.4824742268041237
-0.4824742268041237 x 100 = -48.25%