-54.45% is the change from 551 to 251
Calculation steps:
[( 251 - 551 ) ÷ 551] x 100 = -54.45%
Formula
Percentage change = [(251 - 551) / 551] x 100
Subtract the new number by the original number
251 - 551 = -300
-300 ÷ 551 = -0.5444646098003629
-0.5444646098003629 x 100 = -54.45%