-93.6% is the change from 860 to 55
Calculation steps:
[( 55 - 860 ) ÷ 860] x 100 = -93.6%
Formula
Percentage change = [(55 - 860) / 860] x 100
Subtract the new number by the original number
55 - 860 = -805
-805 ÷ 860 = -0.936046511627907
-0.936046511627907 x 100 = -93.6%