-28.2% is the change from 851 to 611
Calculation steps:
[( 611 - 851 ) ÷ 851] x 100 = -28.2%
Formula
Percentage change = [(611 - 851) / 851] x 100
Subtract the new number by the original number
611 - 851 = -240
-240 ÷ 851 = -0.282021151586369
-0.282021151586369 x 100 = -28.2%