-18.8% is the change from 851 to 691
Calculation steps:
[( 691 - 851 ) ÷ 851] x 100 = -18.8%
Formula
Percentage change = [(691 - 851) / 851] x 100
Subtract the new number by the original number
691 - 851 = -160
-160 ÷ 851 = -0.18801410105757932
-0.18801410105757932 x 100 = -18.8%