-48.3% is the change from 973 to 503
Calculation steps:
[( 503 - 973 ) ÷ 973] x 100 = -48.3%
Formula
Percentage change = [(503 - 973) / 973] x 100
Subtract the new number by the original number
503 - 973 = -470
-470 ÷ 973 = -0.4830421377183967
-0.4830421377183967 x 100 = -48.3%