-51.92% is the change from 287 to 138
Calculation steps:
[( 138 - 287 ) ÷ 287] x 100 = -51.92%
Formula
Percentage change = [(138 - 287) / 287] x 100
Subtract the new number by the original number
138 - 287 = -149
-149 ÷ 287 = -0.519163763066202
-0.519163763066202 x 100 = -51.92%