-73.91% is the change from 847 to 221
Calculation steps:
[( 221 - 847 ) ÷ 847] x 100 = -73.91%
Formula
Percentage change = [(221 - 847) / 847] x 100
Subtract the new number by the original number
221 - 847 = -626
-626 ÷ 847 = -0.7390791027154664
-0.7390791027154664 x 100 = -73.91%