-75.68% is the change from 851 to 207
Calculation steps:
[( 207 - 851 ) ÷ 851] x 100 = -75.68%
Formula
Percentage change = [(207 - 851) / 851] x 100
Subtract the new number by the original number
207 - 851 = -644
-644 ÷ 851 = -0.7567567567567568
-0.7567567567567568 x 100 = -75.68%