-8.7% is the change from 828 to 756
Calculation steps:
[( 756 - 828 ) ÷ 828] x 100 = -8.7%
Formula
Percentage change = [(756 - 828) / 828] x 100
Subtract the new number by the original number
756 - 828 = -72
-72 ÷ 828 = -0.08695652173913043
-0.08695652173913043 x 100 = -8.7%