-54.09% is the change from 843 to 387
Calculation steps:
[( 387 - 843 ) ÷ 843] x 100 = -54.09%
Formula
Percentage change = [(387 - 843) / 843] x 100
Subtract the new number by the original number
387 - 843 = -456
-456 ÷ 843 = -0.5409252669039146
-0.5409252669039146 x 100 = -54.09%