-22.25% is the change from 409 to 318
Calculation steps:
[( 318 - 409 ) ÷ 409] x 100 = -22.25%
Formula
Percentage change = [(318 - 409) / 409] x 100
Subtract the new number by the original number
318 - 409 = -91
-91 ÷ 409 = -0.22249388753056235
-0.22249388753056235 x 100 = -22.25%