-48.2% is the change from 971 to 503
Calculation steps:
[( 503 - 971 ) ÷ 971] x 100 = -48.2%
Formula
Percentage change = [(503 - 971) / 971] x 100
Subtract the new number by the original number
503 - 971 = -468
-468 ÷ 971 = -0.4819773429454171
-0.4819773429454171 x 100 = -48.2%