-83.52% is the change from 619 to 102
Calculation steps:
[( 102 - 619 ) ÷ 619] x 100 = -83.52%
Formula
Percentage change = [(102 - 619) / 619] x 100
Subtract the new number by the original number
102 - 619 = -517
-517 ÷ 619 = -0.8352180936995154
-0.8352180936995154 x 100 = -83.52%