-86.96% is the change from 667 to 87
Calculation steps:
[( 87 - 667 ) ÷ 667] x 100 = -86.96%
Formula
Percentage change = [(87 - 667) / 667] x 100
Subtract the new number by the original number
87 - 667 = -580
-580 ÷ 667 = -0.8695652173913043
-0.8695652173913043 x 100 = -86.96%