-68.37% is the change from 667 to 211
Calculation steps:
[( 211 - 667 ) ÷ 667] x 100 = -68.37%
Formula
Percentage change = [(211 - 667) / 667] x 100
Subtract the new number by the original number
211 - 667 = -456
-456 ÷ 667 = -0.6836581709145427
-0.6836581709145427 x 100 = -68.37%