-45.51% is the change from 457 to 249
Calculation steps:
[( 249 - 457 ) ÷ 457] x 100 = -45.51%
Formula
Percentage change = [(249 - 457) / 457] x 100
Subtract the new number by the original number
249 - 457 = -208
-208 ÷ 457 = -0.4551422319474836
-0.4551422319474836 x 100 = -45.51%