-58.45% is the change from 503 to 209
Calculation steps:
[( 209 - 503 ) ÷ 503] x 100 = -58.45%
Formula
Percentage change = [(209 - 503) / 503] x 100
Subtract the new number by the original number
209 - 503 = -294
-294 ÷ 503 = -0.584493041749503
-0.584493041749503 x 100 = -58.45%