-6.78% is the change from 811 to 756
Calculation steps:
[( 756 - 811 ) ÷ 811] x 100 = -6.78%
Formula
Percentage change = [(756 - 811) / 811] x 100
Subtract the new number by the original number
756 - 811 = -55
-55 ÷ 811 = -0.06781750924784218
-0.06781750924784218 x 100 = -6.78%