-78.5% is the change from 851 to 183
Calculation steps:
[( 183 - 851 ) ÷ 851] x 100 = -78.5%
Formula
Percentage change = [(183 - 851) / 851] x 100
Subtract the new number by the original number
183 - 851 = -668
-668 ÷ 851 = -0.7849588719153937
-0.7849588719153937 x 100 = -78.5%