-58.2% is the change from 811 to 339
Calculation steps:
[( 339 - 811 ) ÷ 811] x 100 = -58.2%
Formula
Percentage change = [(339 - 811) / 811] x 100
Subtract the new number by the original number
339 - 811 = -472
-472 ÷ 811 = -0.5819975339087546
-0.5819975339087546 x 100 = -58.2%