-33.99% is the change from 606 to 400
Calculation steps:
[( 400 - 606 ) ÷ 606] x 100 = -33.99%
Formula
Percentage change = [(400 - 606) / 606] x 100
Subtract the new number by the original number
400 - 606 = -206
-206 ÷ 606 = -0.33993399339933994
-0.33993399339933994 x 100 = -33.99%