-85.43% is the change from 851 to 124
Calculation steps:
[( 124 - 851 ) ÷ 851] x 100 = -85.43%
Formula
Percentage change = [(124 - 851) / 851] x 100
Subtract the new number by the original number
124 - 851 = -727
-727 ÷ 851 = -0.854289071680376
-0.854289071680376 x 100 = -85.43%