-91.92% is the change from 619 to 50
Calculation steps:
[( 50 - 619 ) ÷ 619] x 100 = -91.92%
Formula
Percentage change = [(50 - 619) / 619] x 100
Subtract the new number by the original number
50 - 619 = -569
-569 ÷ 619 = -0.9192245557350566
-0.9192245557350566 x 100 = -91.92%