-71.04% is the change from 770 to 223
Calculation steps:
[( 223 - 770 ) ÷ 770] x 100 = -71.04%
Formula
Percentage change = [(223 - 770) / 770] x 100
Subtract the new number by the original number
223 - 770 = -547
-547 ÷ 770 = -0.7103896103896103
-0.7103896103896103 x 100 = -71.04%