-87.7% is the change from 683 to 84
Calculation steps:
[( 84 - 683 ) ÷ 683] x 100 = -87.7%
Formula
Percentage change = [(84 - 683) / 683] x 100
Subtract the new number by the original number
84 - 683 = -599
-599 ÷ 683 = -0.87701317715959
-0.87701317715959 x 100 = -87.7%