-35.37% is the change from 851 to 550
Calculation steps:
[( 550 - 851 ) ÷ 851] x 100 = -35.37%
Formula
Percentage change = [(550 - 851) / 851] x 100
Subtract the new number by the original number
550 - 851 = -301
-301 ÷ 851 = -0.3537015276145711
-0.3537015276145711 x 100 = -35.37%