-98.38% is the change from 619 to 10
Calculation steps:
[( 10 - 619 ) ÷ 619] x 100 = -98.38%
Formula
Percentage change = [(10 - 619) / 619] x 100
Subtract the new number by the original number
10 - 619 = -609
-609 ÷ 619 = -0.9838449111470113
-0.9838449111470113 x 100 = -98.38%