-81.18% is the change from 287 to 54
Calculation steps:
[( 54 - 287 ) ÷ 287] x 100 = -81.18%
Formula
Percentage change = [(54 - 287) / 287] x 100
Subtract the new number by the original number
54 - 287 = -233
-233 ÷ 287 = -0.8118466898954704
-0.8118466898954704 x 100 = -81.18%