-55.23% is the change from 909 to 407
Calculation steps:
[( 407 - 909 ) ÷ 909] x 100 = -55.23%
Formula
Percentage change = [(407 - 909) / 909] x 100
Subtract the new number by the original number
407 - 909 = -502
-502 ÷ 909 = -0.5522552255225522
-0.5522552255225522 x 100 = -55.23%