-87.56% is the change from 619 to 77
Calculation steps:
[( 77 - 619 ) ÷ 619] x 100 = -87.56%
Formula
Percentage change = [(77 - 619) / 619] x 100
Subtract the new number by the original number
77 - 619 = -542
-542 ÷ 619 = -0.875605815831987
-0.875605815831987 x 100 = -87.56%