-44.53% is the change from 503 to 279
Calculation steps:
[( 279 - 503 ) ÷ 503] x 100 = -44.53%
Formula
Percentage change = [(279 - 503) / 503] x 100
Subtract the new number by the original number
279 - 503 = -224
-224 ÷ 503 = -0.44532803180914515
-0.44532803180914515 x 100 = -44.53%