-85.36% is the change from 676 to 99
Calculation steps:
[( 99 - 676 ) ÷ 676] x 100 = -85.36%
Formula
Percentage change = [(99 - 676) / 676] x 100
Subtract the new number by the original number
99 - 676 = -577
-577 ÷ 676 = -0.8535502958579881
-0.8535502958579881 x 100 = -85.36%
Example