-51.7% is the change from 176 to 85
Calculation steps:
[( 85 - 176 ) ÷ 176] x 100 = -51.7%
Formula
Percentage change = [(85 - 176) / 176] x 100
Subtract the new number by the original number
85 - 176 = -91
-91 ÷ 176 = -0.5170454545454546
-0.5170454545454546 x 100 = -51.7%