-15.66% is the change from 811 to 684
Calculation steps:
[( 684 - 811 ) ÷ 811] x 100 = -15.66%
Formula
Percentage change = [(684 - 811) / 811] x 100
Subtract the new number by the original number
684 - 811 = -127
-127 ÷ 811 = -0.15659679408138102
-0.15659679408138102 x 100 = -15.66%