-84.98% is the change from 566 to 85
Calculation steps:
[( 85 - 566 ) ÷ 566] x 100 = -84.98%
Formula
Percentage change = [(85 - 566) / 566] x 100
Subtract the new number by the original number
85 - 566 = -481
-481 ÷ 566 = -0.8498233215547704
-0.8498233215547704 x 100 = -84.98%