-68.21% is the change from 648 to 206
Calculation steps:
[( 206 - 648 ) ÷ 648] x 100 = -68.21%
Formula
Percentage change = [(206 - 648) / 648] x 100
Subtract the new number by the original number
206 - 648 = -442
-442 ÷ 648 = -0.6820987654320988
-0.6820987654320988 x 100 = -68.21%