-82.38% is the change from 488 to 86
Calculation steps:
[( 86 - 488 ) ÷ 488] x 100 = -82.38%
Formula
Percentage change = [(86 - 488) / 488] x 100
Subtract the new number by the original number
86 - 488 = -402
-402 ÷ 488 = -0.8237704918032787
-0.8237704918032787 x 100 = -82.38%