-85.51% is the change from 683 to 99
Calculation steps:
[( 99 - 683 ) ÷ 683] x 100 = -85.51%
Formula
Percentage change = [(99 - 683) / 683] x 100
Subtract the new number by the original number
99 - 683 = -584
-584 ÷ 683 = -0.8550512445095169
-0.8550512445095169 x 100 = -85.51%