-89.61% is the change from 837 to 87
Calculation steps:
[( 87 - 837 ) ÷ 837] x 100 = -89.61%
Formula
Percentage change = [(87 - 837) / 837] x 100
Subtract the new number by the original number
87 - 837 = -750
-750 ÷ 837 = -0.8960573476702509
-0.8960573476702509 x 100 = -89.61%