-87.02% is the change from 593 to 77
Calculation steps:
[( 77 - 593 ) ÷ 593] x 100 = -87.02%
Formula
Percentage change = [(77 - 593) / 593] x 100
Subtract the new number by the original number
77 - 593 = -516
-516 ÷ 593 = -0.8701517706576728
-0.8701517706576728 x 100 = -87.02%