-86.59% is the change from 649 to 87
Calculation steps:
[( 87 - 649 ) ÷ 649] x 100 = -86.59%
Formula
Percentage change = [(87 - 649) / 649] x 100
Subtract the new number by the original number
87 - 649 = -562
-562 ÷ 649 = -0.8659476117103235
-0.8659476117103235 x 100 = -86.59%