-7.2% is the change from 986 to 915
Calculation steps:
[( 915 - 986 ) ÷ 986] x 100 = -7.2%
Formula
Percentage change = [(915 - 986) / 986] x 100
Subtract the new number by the original number
915 - 986 = -71
-71 ÷ 986 = -0.0720081135902637
-0.0720081135902637 x 100 = -7.2%