-73.09% is the change from 851 to 229
Calculation steps:
[( 229 - 851 ) ÷ 851] x 100 = -73.09%
Formula
Percentage change = [(229 - 851) / 851] x 100
Subtract the new number by the original number
229 - 851 = -622
-622 ÷ 851 = -0.7309048178613397
-0.7309048178613397 x 100 = -73.09%