-85.89% is the change from 666 to 94
Calculation steps:
[( 94 - 666 ) ÷ 666] x 100 = -85.89%
Formula
Percentage change = [(94 - 666) / 666] x 100
Subtract the new number by the original number
94 - 666 = -572
-572 ÷ 666 = -0.8588588588588588
-0.8588588588588588 x 100 = -85.89%