-62.51% is the change from 851 to 319
Calculation steps:
[( 319 - 851 ) ÷ 851] x 100 = -62.51%
Formula
Percentage change = [(319 - 851) / 851] x 100
Subtract the new number by the original number
319 - 851 = -532
-532 ÷ 851 = -0.6251468860164512
-0.6251468860164512 x 100 = -62.51%