-87.24% is the change from 674 to 86
Calculation steps:
[( 86 - 674 ) ÷ 674] x 100 = -87.24%
Formula
Percentage change = [(86 - 674) / 674] x 100
Subtract the new number by the original number
86 - 674 = -588
-588 ÷ 674 = -0.8724035608308606
-0.8724035608308606 x 100 = -87.24%