-54.86% is the change from 556 to 251
Calculation steps:
[( 251 - 556 ) ÷ 556] x 100 = -54.86%
Formula
Percentage change = [(251 - 556) / 556] x 100
Subtract the new number by the original number
251 - 556 = -305
-305 ÷ 556 = -0.5485611510791367
-0.5485611510791367 x 100 = -54.86%