-71.35% is the change from 768 to 220
Calculation steps:
[( 220 - 768 ) ÷ 768] x 100 = -71.35%
Formula
Percentage change = [(220 - 768) / 768] x 100
Subtract the new number by the original number
220 - 768 = -548
-548 ÷ 768 = -0.7135416666666666
-0.7135416666666666 x 100 = -71.35%