-41.38% is the change from 858 to 503
Calculation steps:
[( 503 - 858 ) ÷ 858] x 100 = -41.38%
Formula
Percentage change = [(503 - 858) / 858] x 100
Subtract the new number by the original number
503 - 858 = -355
-355 ÷ 858 = -0.41375291375291373
-0.41375291375291373 x 100 = -41.38%