-35.08% is the change from 630 to 409
Calculation steps:
[( 409 - 630 ) ÷ 630] x 100 = -35.08%
Formula
Percentage change = [(409 - 630) / 630] x 100
Subtract the new number by the original number
409 - 630 = -221
-221 ÷ 630 = -0.35079365079365077
-0.35079365079365077 x 100 = -35.08%