-68.73% is the change from 678 to 212
Calculation steps:
[( 212 - 678 ) ÷ 678] x 100 = -68.73%
Formula
Percentage change = [(212 - 678) / 678] x 100
Subtract the new number by the original number
212 - 678 = -466
-466 ÷ 678 = -0.6873156342182891
-0.6873156342182891 x 100 = -68.73%