-45.3% is the change from 457 to 250
Calculation steps:
[( 250 - 457 ) ÷ 457] x 100 = -45.3%
Formula
Percentage change = [(250 - 457) / 457] x 100
Subtract the new number by the original number
250 - 457 = -207
-207 ÷ 457 = -0.45295404814004375
-0.45295404814004375 x 100 = -45.3%