-45.08% is the change from 457 to 251
Calculation steps:
[( 251 - 457 ) ÷ 457] x 100 = -45.08%
Formula
Percentage change = [(251 - 457) / 457] x 100
Subtract the new number by the original number
251 - 457 = -206
-206 ÷ 457 = -0.45076586433260396
-0.45076586433260396 x 100 = -45.08%