-15.07% is the change from 909 to 772
Calculation steps:
[( 772 - 909 ) ÷ 909] x 100 = -15.07%
Formula
Percentage change = [(772 - 909) / 909] x 100
Subtract the new number by the original number
772 - 909 = -137
-137 ÷ 909 = -0.15071507150715072
-0.15071507150715072 x 100 = -15.07%