-85.31% is the change from 674 to 99
Calculation steps:
[( 99 - 674 ) ÷ 674] x 100 = -85.31%
Formula
Percentage change = [(99 - 674) / 674] x 100
Subtract the new number by the original number
99 - 674 = -575
-575 ÷ 674 = -0.8531157270029673
-0.8531157270029673 x 100 = -85.31%