-73.08% is the change from 806 to 217
Calculation steps:
[( 217 - 806 ) ÷ 806] x 100 = -73.08%
Formula
Percentage change = [(217 - 806) / 806] x 100
Subtract the new number by the original number
217 - 806 = -589
-589 ÷ 806 = -0.7307692307692307
-0.7307692307692307 x 100 = -73.08%