-83.99% is the change from 581 to 93
Calculation steps:
[( 93 - 581 ) ÷ 581] x 100 = -83.99%
Formula
Percentage change = [(93 - 581) / 581] x 100
Subtract the new number by the original number
93 - 581 = -488
-488 ÷ 581 = -0.8399311531841652
-0.8399311531841652 x 100 = -83.99%