-30.27% is the change from 555 to 387
Calculation steps:
[( 387 - 555 ) ÷ 555] x 100 = -30.27%
Formula
Percentage change = [(387 - 555) / 555] x 100
Subtract the new number by the original number
387 - 555 = -168
-168 ÷ 555 = -0.3027027027027027
-0.3027027027027027 x 100 = -30.27%