-86.06% is the change from 617 to 86
Calculation steps:
[( 86 - 617 ) ÷ 617] x 100 = -86.06%
Formula
Percentage change = [(86 - 617) / 617] x 100
Subtract the new number by the original number
86 - 617 = -531
-531 ÷ 617 = -0.8606158833063209
-0.8606158833063209 x 100 = -86.06%