-87.39% is the change from 674 to 85
Calculation steps:
[( 85 - 674 ) ÷ 674] x 100 = -87.39%
Formula
Percentage change = [(85 - 674) / 674] x 100
Subtract the new number by the original number
85 - 674 = -589
-589 ÷ 674 = -0.8738872403560831
-0.8738872403560831 x 100 = -87.39%