-82.96% is the change from 851 to 145
Calculation steps:
[( 145 - 851 ) ÷ 851] x 100 = -82.96%
Formula
Percentage change = [(145 - 851) / 851] x 100
Subtract the new number by the original number
145 - 851 = -706
-706 ÷ 851 = -0.8296122209165687
-0.8296122209165687 x 100 = -82.96%
Example