-77.81% is the change from 996 to 221
Calculation steps:
[( 221 - 996 ) ÷ 996] x 100 = -77.81%
Formula
Percentage change = [(221 - 996) / 996] x 100
Subtract the new number by the original number
221 - 996 = -775
-775 ÷ 996 = -0.7781124497991968
-0.7781124497991968 x 100 = -77.81%