-85.46% is the change from 681 to 99
Calculation steps:
[( 99 - 681 ) ÷ 681] x 100 = -85.46%
Formula
Percentage change = [(99 - 681) / 681] x 100
Subtract the new number by the original number
99 - 681 = -582
-582 ÷ 681 = -0.8546255506607929
-0.8546255506607929 x 100 = -85.46%