-51.17% is the change from 514 to 251
Calculation steps:
[( 251 - 514 ) ÷ 514] x 100 = -51.17%
Formula
Percentage change = [(251 - 514) / 514] x 100
Subtract the new number by the original number
251 - 514 = -263
-263 ÷ 514 = -0.5116731517509727
-0.5116731517509727 x 100 = -51.17%