-40.93% is the change from 667 to 394
Calculation steps:
[( 394 - 667 ) ÷ 667] x 100 = -40.93%
Formula
Percentage change = [(394 - 667) / 667] x 100
Subtract the new number by the original number
394 - 667 = -273
-273 ÷ 667 = -0.40929535232383807
-0.40929535232383807 x 100 = -40.93%