-86.53% is the change from 579 to 78
Calculation steps:
[( 78 - 579 ) ÷ 579] x 100 = -86.53%
Formula
Percentage change = [(78 - 579) / 579] x 100
Subtract the new number by the original number
78 - 579 = -501
-501 ÷ 579 = -0.8652849740932642
-0.8652849740932642 x 100 = -86.53%