-93.42% is the change from 851 to 56
Calculation steps:
[( 56 - 851 ) ÷ 851] x 100 = -93.42%
Formula
Percentage change = [(56 - 851) / 851] x 100
Subtract the new number by the original number
56 - 851 = -795
-795 ÷ 851 = -0.9341950646298472
-0.9341950646298472 x 100 = -93.42%