-69.12% is the change from 667 to 206
Calculation steps:
[( 206 - 667 ) ÷ 667] x 100 = -69.12%
Formula
Percentage change = [(206 - 667) / 667] x 100
Subtract the new number by the original number
206 - 667 = -461
-461 ÷ 667 = -0.6911544227886057
-0.6911544227886057 x 100 = -69.12%