-85.78% is the change from 612 to 87
Calculation steps:
[( 87 - 612 ) ÷ 612] x 100 = -85.78%
Formula
Percentage change = [(87 - 612) / 612] x 100
Subtract the new number by the original number
87 - 612 = -525
-525 ÷ 612 = -0.8578431372549019
-0.8578431372549019 x 100 = -85.78%