-72.34% is the change from 799 to 221
Calculation steps:
[( 221 - 799 ) ÷ 799] x 100 = -72.34%
Formula
Percentage change = [(221 - 799) / 799] x 100
Subtract the new number by the original number
221 - 799 = -578
-578 ÷ 799 = -0.723404255319149
-0.723404255319149 x 100 = -72.34%