-68.24% is the change from 677 to 215
Calculation steps:
[( 215 - 677 ) ÷ 677] x 100 = -68.24%
Formula
Percentage change = [(215 - 677) / 677] x 100
Subtract the new number by the original number
215 - 677 = -462
-462 ÷ 677 = -0.6824224519940916
-0.6824224519940916 x 100 = -68.24%