-18.9% is the change from 619 to 502
Calculation steps:
[( 502 - 619 ) ÷ 619] x 100 = -18.9%
Formula
Percentage change = [(502 - 619) / 619] x 100
Subtract the new number by the original number
502 - 619 = -117
-117 ÷ 619 = -0.1890145395799677
-0.1890145395799677 x 100 = -18.9%