-68.34% is the change from 679 to 215
Calculation steps:
[( 215 - 679 ) ÷ 679] x 100 = -68.34%
Formula
Percentage change = [(215 - 679) / 679] x 100
Subtract the new number by the original number
215 - 679 = -464
-464 ÷ 679 = -0.6833578792341679
-0.6833578792341679 x 100 = -68.34%