-93.1% is the change from 87 to 6
Calculation steps:
[( 6 - 87 ) ÷ 87] x 100 = -93.1%
Formula
Percentage change = [(6 - 87) / 87] x 100
Subtract the new number by the original number
6 - 87 = -81
-81 ÷ 87 = -0.9310344827586207
-0.9310344827586207 x 100 = -93.1%