-87.08% is the change from 619 to 80
Calculation steps:
[( 80 - 619 ) ÷ 619] x 100 = -87.08%
Formula
Percentage change = [(80 - 619) / 619] x 100
Subtract the new number by the original number
80 - 619 = -539
-539 ÷ 619 = -0.8707592891760905
-0.8707592891760905 x 100 = -87.08%