-72.58% is the change from 806 to 221
Calculation steps:
[( 221 - 806 ) ÷ 806] x 100 = -72.58%
Formula
Percentage change = [(221 - 806) / 806] x 100
Subtract the new number by the original number
221 - 806 = -585
-585 ÷ 806 = -0.7258064516129032
-0.7258064516129032 x 100 = -72.58%