-22.41% is the change from 406 to 315
Calculation steps:
[( 315 - 406 ) ÷ 406] x 100 = -22.41%
Formula
Percentage change = [(315 - 406) / 406] x 100
Subtract the new number by the original number
315 - 406 = -91
-91 ÷ 406 = -0.22413793103448276
-0.22413793103448276 x 100 = -22.41%