-72.39% is the change from 909 to 251
Calculation steps:
[( 251 - 909 ) ÷ 909] x 100 = -72.39%
Formula
Percentage change = [(251 - 909) / 909] x 100
Subtract the new number by the original number
251 - 909 = -658
-658 ÷ 909 = -0.7238723872387238
-0.7238723872387238 x 100 = -72.39%