-55.27% is the change from 503 to 225
Calculation steps:
[( 225 - 503 ) ÷ 503] x 100 = -55.27%
Formula
Percentage change = [(225 - 503) / 503] x 100
Subtract the new number by the original number
225 - 503 = -278
-278 ÷ 503 = -0.5526838966202783
-0.5526838966202783 x 100 = -55.27%