-26.18% is the change from 909 to 671
Calculation steps:
[( 671 - 909 ) ÷ 909] x 100 = -26.18%
Formula
Percentage change = [(671 - 909) / 909] x 100
Subtract the new number by the original number
671 - 909 = -238
-238 ÷ 909 = -0.26182618261826185
-0.26182618261826185 x 100 = -26.18%