-6.73% is the change from 981 to 915
Calculation steps:
[( 915 - 981 ) ÷ 981] x 100 = -6.73%
Formula
Percentage change = [(915 - 981) / 981] x 100
Subtract the new number by the original number
915 - 981 = -66
-66 ÷ 981 = -0.0672782874617737
-0.0672782874617737 x 100 = -6.73%