-43.9% is the change from 287 to 161
Calculation steps:
[( 161 - 287 ) ÷ 287] x 100 = -43.9%
Formula
Percentage change = [(161 - 287) / 287] x 100
Subtract the new number by the original number
161 - 287 = -126
-126 ÷ 287 = -0.43902439024390244
-0.43902439024390244 x 100 = -43.9%