-86.3% is the change from 679 to 93
Calculation steps:
[( 93 - 679 ) ÷ 679] x 100 = -86.3%
Formula
Percentage change = [(93 - 679) / 679] x 100
Subtract the new number by the original number
93 - 679 = -586
-586 ÷ 679 = -0.8630338733431517
-0.8630338733431517 x 100 = -86.3%