-39.98% is the change from 838 to 503
Calculation steps:
[( 503 - 838 ) ÷ 838] x 100 = -39.98%
Formula
Percentage change = [(503 - 838) / 838] x 100
Subtract the new number by the original number
503 - 838 = -335
-335 ÷ 838 = -0.3997613365155131
-0.3997613365155131 x 100 = -39.98%