-54.03% is the change from 620 to 285
Calculation steps:
[( 285 - 620 ) ÷ 620] x 100 = -54.03%
Formula
Percentage change = [(285 - 620) / 620] x 100
Subtract the new number by the original number
285 - 620 = -335
-335 ÷ 620 = -0.5403225806451613
-0.5403225806451613 x 100 = -54.03%