-28.08% is the change from 851 to 612
Calculation steps:
[( 612 - 851 ) ÷ 851] x 100 = -28.08%
Formula
Percentage change = [(612 - 851) / 851] x 100
Subtract the new number by the original number
612 - 851 = -239
-239 ÷ 851 = -0.2808460634547591
-0.2808460634547591 x 100 = -28.08%