-22.8% is the change from 851 to 657
Calculation steps:
[( 657 - 851 ) ÷ 851] x 100 = -22.8%
Formula
Percentage change = [(657 - 851) / 851] x 100
Subtract the new number by the original number
657 - 851 = -194
-194 ÷ 851 = -0.22796709753231492
-0.22796709753231492 x 100 = -22.8%