-39.88% is the change from 667 to 401
Calculation steps:
[( 401 - 667 ) ÷ 667] x 100 = -39.88%
Formula
Percentage change = [(401 - 667) / 667] x 100
Subtract the new number by the original number
401 - 667 = -266
-266 ÷ 667 = -0.3988005997001499
-0.3988005997001499 x 100 = -39.88%