-18.81% is the change from 909 to 738
Calculation steps:
[( 738 - 909 ) ÷ 909] x 100 = -18.81%
Formula
Percentage change = [(738 - 909) / 909] x 100
Subtract the new number by the original number
738 - 909 = -171
-171 ÷ 909 = -0.18811881188118812
-0.18811881188118812 x 100 = -18.81%