-0.77% is the change from 915 to 908
Calculation steps:
[( 908 - 915 ) ÷ 915] x 100 = -0.77%
Formula
Percentage change = [(908 - 915) / 915] x 100
Subtract the new number by the original number
908 - 915 = -7
-7 ÷ 915 = -0.007650273224043716
-0.007650273224043716 x 100 = -0.77%