-19.68% is the change from 503 to 404
Calculation steps:
[( 404 - 503 ) ÷ 503] x 100 = -19.68%
Formula
Percentage change = [(404 - 503) / 503] x 100
Subtract the new number by the original number
404 - 503 = -99
-99 ÷ 503 = -0.19681908548707752
-0.19681908548707752 x 100 = -19.68%