-16.52% is the change from 339 to 283
Calculation steps:
[( 283 - 339 ) ÷ 339] x 100 = -16.52%
Formula
Percentage change = [(283 - 339) / 339] x 100
Subtract the new number by the original number
283 - 339 = -56
-56 ÷ 339 = -0.16519174041297935
-0.16519174041297935 x 100 = -16.52%