-67.6% is the change from 679 to 220
Calculation steps:
[( 220 - 679 ) ÷ 679] x 100 = -67.6%
Formula
Percentage change = [(220 - 679) / 679] x 100
Subtract the new number by the original number
220 - 679 = -459
-459 ÷ 679 = -0.6759941089837997
-0.6759941089837997 x 100 = -67.6%