-51.14% is the change from 176 to 86
Calculation steps:
[( 86 - 176 ) ÷ 176] x 100 = -51.14%
Formula
Percentage change = [(86 - 176) / 176] x 100
Subtract the new number by the original number
86 - 176 = -90
-90 ÷ 176 = -0.5113636363636364
-0.5113636363636364 x 100 = -51.14%