-23.85% is the change from 851 to 648
Calculation steps:
[( 648 - 851 ) ÷ 851] x 100 = -23.85%
Formula
Percentage change = [(648 - 851) / 851] x 100
Subtract the new number by the original number
648 - 851 = -203
-203 ÷ 851 = -0.23854289071680376
-0.23854289071680376 x 100 = -23.85%