-39.51% is the change from 286 to 173
Calculation steps:
[( 173 - 286 ) ÷ 286] x 100 = -39.51%
Formula
Percentage change = [(173 - 286) / 286] x 100
Subtract the new number by the original number
173 - 286 = -113
-113 ÷ 286 = -0.3951048951048951
-0.3951048951048951 x 100 = -39.51%