-65.51% is the change from 287 to 99
Calculation steps:
[( 99 - 287 ) ÷ 287] x 100 = -65.51%
Formula
Percentage change = [(99 - 287) / 287] x 100
Subtract the new number by the original number
99 - 287 = -188
-188 ÷ 287 = -0.6550522648083623
-0.6550522648083623 x 100 = -65.51%