-54.52% is the change from 851 to 387
Calculation steps:
[( 387 - 851 ) ÷ 851] x 100 = -54.52%
Formula
Percentage change = [(387 - 851) / 851] x 100
Subtract the new number by the original number
387 - 851 = -464
-464 ÷ 851 = -0.54524089306698
-0.54524089306698 x 100 = -54.52%