-76.85% is the change from 851 to 197
Calculation steps:
[( 197 - 851 ) ÷ 851] x 100 = -76.85%
Formula
Percentage change = [(197 - 851) / 851] x 100
Subtract the new number by the original number
197 - 851 = -654
-654 ÷ 851 = -0.7685076380728555
-0.7685076380728555 x 100 = -76.85%