-86.87% is the change from 579 to 76
Calculation steps:
[( 76 - 579 ) ÷ 579] x 100 = -86.87%
Formula
Percentage change = [(76 - 579) / 579] x 100
Subtract the new number by the original number
76 - 579 = -503
-503 ÷ 579 = -0.8687392055267703
-0.8687392055267703 x 100 = -86.87%