-45.14% is the change from 556 to 305
Calculation steps:
[( 305 - 556 ) ÷ 556] x 100 = -45.14%
Formula
Percentage change = [(305 - 556) / 556] x 100
Subtract the new number by the original number
305 - 556 = -251
-251 ÷ 556 = -0.45143884892086333
-0.45143884892086333 x 100 = -45.14%