-42.03% is the change from 690 to 400
Calculation steps:
[( 400 - 690 ) ÷ 690] x 100 = -42.03%
Formula
Percentage change = [(400 - 690) / 690] x 100
Subtract the new number by the original number
400 - 690 = -290
-290 ÷ 690 = -0.42028985507246375
-0.42028985507246375 x 100 = -42.03%