-51.99% is the change from 806 to 387
Calculation steps:
[( 387 - 806 ) ÷ 806] x 100 = -51.99%
Formula
Percentage change = [(387 - 806) / 806] x 100
Subtract the new number by the original number
387 - 806 = -419
-419 ÷ 806 = -0.5198511166253101
-0.5198511166253101 x 100 = -51.99%