-33.05% is the change from 811 to 543
Calculation steps:
[( 543 - 811 ) ÷ 811] x 100 = -33.05%
Formula
Percentage change = [(543 - 811) / 811] x 100
Subtract the new number by the original number
543 - 811 = -268
-268 ÷ 811 = -0.33045622688039455
-0.33045622688039455 x 100 = -33.05%