-45.32% is the change from 620 to 339
Calculation steps:
[( 339 - 620 ) ÷ 620] x 100 = -45.32%
Formula
Percentage change = [(339 - 620) / 620] x 100
Subtract the new number by the original number
339 - 620 = -281
-281 ÷ 620 = -0.4532258064516129
-0.4532258064516129 x 100 = -45.32%