-82.73% is the change from 851 to 147
Calculation steps:
[( 147 - 851 ) ÷ 851] x 100 = -82.73%
Formula
Percentage change = [(147 - 851) / 851] x 100
Subtract the new number by the original number
147 - 851 = -704
-704 ÷ 851 = -0.827262044653349
-0.827262044653349 x 100 = -82.73%