-28.73% is the change from 543 to 387
Calculation steps:
[( 387 - 543 ) ÷ 543] x 100 = -28.73%
Formula
Percentage change = [(387 - 543) / 543] x 100
Subtract the new number by the original number
387 - 543 = -156
-156 ÷ 543 = -0.287292817679558
-0.287292817679558 x 100 = -28.73%