-80.14% is the change from 851 to 169
Calculation steps:
[( 169 - 851 ) ÷ 851] x 100 = -80.14%
Formula
Percentage change = [(169 - 851) / 851] x 100
Subtract the new number by the original number
169 - 851 = -682
-682 ÷ 851 = -0.8014101057579318
-0.8014101057579318 x 100 = -80.14%