-77.09% is the change from 851 to 195
Calculation steps:
[( 195 - 851 ) ÷ 851] x 100 = -77.09%
Formula
Percentage change = [(195 - 851) / 851] x 100
Subtract the new number by the original number
195 - 851 = -656
-656 ÷ 851 = -0.7708578143360753
-0.7708578143360753 x 100 = -77.09%