-68.6% is the change from 656 to 206
Calculation steps:
[( 206 - 656 ) ÷ 656] x 100 = -68.6%
Formula
Percentage change = [(206 - 656) / 656] x 100
Subtract the new number by the original number
206 - 656 = -450
-450 ÷ 656 = -0.6859756097560976
-0.6859756097560976 x 100 = -68.6%