-93.76% is the change from 866 to 54
Calculation steps:
[( 54 - 866 ) ÷ 866] x 100 = -93.76%
Formula
Percentage change = [(54 - 866) / 866] x 100
Subtract the new number by the original number
54 - 866 = -812
-812 ÷ 866 = -0.9376443418013857
-0.9376443418013857 x 100 = -93.76%