-86.7% is the change from 594 to 79
Calculation steps:
[( 79 - 594 ) ÷ 594] x 100 = -86.7%
Formula
Percentage change = [(79 - 594) / 594] x 100
Subtract the new number by the original number
79 - 594 = -515
-515 ÷ 594 = -0.867003367003367
-0.867003367003367 x 100 = -86.7%