-64.46% is the change from 287 to 102
Calculation steps:
[( 102 - 287 ) ÷ 287] x 100 = -64.46%
Formula
Percentage change = [(102 - 287) / 287] x 100
Subtract the new number by the original number
102 - 287 = -185
-185 ÷ 287 = -0.6445993031358885
-0.6445993031358885 x 100 = -64.46%