-66.06% is the change from 657 to 223
Calculation steps:
[( 223 - 657 ) ÷ 657] x 100 = -66.06%
Formula
Percentage change = [(223 - 657) / 657] x 100
Subtract the new number by the original number
223 - 657 = -434
-434 ÷ 657 = -0.6605783866057838
-0.6605783866057838 x 100 = -66.06%