-58.46% is the change from 816 to 339
Calculation steps:
[( 339 - 816 ) ÷ 816] x 100 = -58.46%
Formula
Percentage change = [(339 - 816) / 816] x 100
Subtract the new number by the original number
339 - 816 = -477
-477 ÷ 816 = -0.5845588235294118
-0.5845588235294118 x 100 = -58.46%