-84.56% is the change from 557 to 86
Calculation steps:
[( 86 - 557 ) ÷ 557] x 100 = -84.56%
Formula
Percentage change = [(86 - 557) / 557] x 100
Subtract the new number by the original number
86 - 557 = -471
-471 ÷ 557 = -0.8456014362657092
-0.8456014362657092 x 100 = -84.56%