-33.54% is the change from 811 to 539
Calculation steps:
[( 539 - 811 ) ÷ 811] x 100 = -33.54%
Formula
Percentage change = [(539 - 811) / 811] x 100
Subtract the new number by the original number
539 - 811 = -272
-272 ÷ 811 = -0.3353884093711467
-0.3353884093711467 x 100 = -33.54%